./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:16:03,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:16:03,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:16:03,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:16:03,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:16:03,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:16:03,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:16:03,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:16:03,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:16:03,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:16:03,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:16:03,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:16:03,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:16:03,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:16:03,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:16:03,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:16:03,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:16:03,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:16:03,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:16:03,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:16:03,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:16:03,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:16:03,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:16:03,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:16:03,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:16:03,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:16:03,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:16:03,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:16:03,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:16:03,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:16:03,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:16:03,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:16:03,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:16:03,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:16:03,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:16:03,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:16:03,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:16:03,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:16:03,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:16:03,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:16:03,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:16:03,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:16:03,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:16:03,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:16:03,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:16:03,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:16:03,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:16:03,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:16:03,499 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:16:03,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:16:03,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:16:03,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:16:03,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:16:03,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:16:03,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:16:03,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:16:03,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:16:03,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:16:03,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:16:03,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:16:03,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:16:03,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:16:03,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:16:03,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:16:03,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:16:03,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:16:03,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:16:03,503 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:16:03,503 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:16:03,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:16:03,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:16:03,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2021-11-06 15:16:03,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:16:03,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:16:03,770 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:16:03,772 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:16:03,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:16:03,773 INFO L432 ainManager$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 [2021-11-06 15:16:03,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2cc11fc/519b33b203804e409285c36a6d892ee0/FLAG8158d9c8d [2021-11-06 15:16:04,505 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:16:04,506 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 [2021-11-06 15:16:04,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2cc11fc/519b33b203804e409285c36a6d892ee0/FLAG8158d9c8d [2021-11-06 15:16:04,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2cc11fc/519b33b203804e409285c36a6d892ee0 [2021-11-06 15:16:04,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:16:04,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:16:04,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:16:04,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:16:04,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:16:04,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:16:04" (1/1) ... [2021-11-06 15:16:04,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fff5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:04, skipping insertion in model container [2021-11-06 15:16:04,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:16:04" (1/1) ... [2021-11-06 15:16:04,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:16:04,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:16:05,406 WARN L228 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] [2021-11-06 15:16:05,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:16:05,888 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:16:05,960 WARN L228 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] [2021-11-06 15:16:06,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:16:06,202 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:16:06,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06 WrapperNode [2021-11-06 15:16:06,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:16:06,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:16:06,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:16:06,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:16:06,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:06,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:07,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:16:07,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:16:07,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:16:07,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:16:07,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:07,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:08,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:08,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:09,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:09,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:09,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:09,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:16:09,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:16:09,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:16:09,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:16:09,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (1/1) ... [2021-11-06 15:16:09,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:16:09,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:16:09,727 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) [2021-11-06 15:16:09,742 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 [2021-11-06 15:16:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:16:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:16:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-06 15:16:09,759 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-06 15:16:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:16:09,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:16:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:16:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:16:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:16:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:16:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:16:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-06 15:16:09,760 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-06 15:16:09,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:16:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-06 15:16:09,761 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-06 15:16:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:16:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-06 15:16:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-06 15:16:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:16:09,761 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:16:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-06 15:16:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-06 15:16:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-06 15:16:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-06 15:16:09,762 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 15:16:09,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 15:16:09,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:16:09,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:16:09,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:17:00,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:17:00,986 INFO L299 CfgBuilder]: Removed 14253 assume(true) statements. [2021-11-06 15:17:00,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:17:00 BoogieIcfgContainer [2021-11-06 15:17:00,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:17:01,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:17:01,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:17:01,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:17:01,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:16:04" (1/3) ... [2021-11-06 15:17:01,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74987a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:17:01, skipping insertion in model container [2021-11-06 15:17:01,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:16:06" (2/3) ... [2021-11-06 15:17:01,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74987a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:17:01, skipping insertion in model container [2021-11-06 15:17:01,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:17:00" (3/3) ... [2021-11-06 15:17:01,007 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-06 15:17:01,011 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:17:01,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-06 15:17:01,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:17:01,098 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 [2021-11-06 15:17:01,098 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-06 15:17:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 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) [2021-11-06 15:17:01,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 15:17:01,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:17:01,259 INFO L513 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] [2021-11-06 15:17:01,260 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)] === [2021-11-06 15:17:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:17:01,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1301554369, now seen corresponding path program 1 times [2021-11-06 15:17:01,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:17:01,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140233596] [2021-11-06 15:17:01,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:17:01,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:17:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:17:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:17:01,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:17:01,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140233596] [2021-11-06 15:17:01,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140233596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:17:01,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:17:01,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:17:01,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870984837] [2021-11-06 15:17:01,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:17:01,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:17:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:17:01,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:17:01,999 INFO L87 Difference]: Start difference. First operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:17:04,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:17:04,950 INFO L93 Difference]: Finished difference Result 31641 states and 44017 transitions. [2021-11-06 15:17:04,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:17:04,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-06 15:17:04,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:17:05,074 INFO L225 Difference]: With dead ends: 31641 [2021-11-06 15:17:05,074 INFO L226 Difference]: Without dead ends: 19678 [2021-11-06 15:17:05,143 INFO L786 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 [2021-11-06 15:17:05,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19678 states. [2021-11-06 15:17:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 19678. [2021-11-06 15:17:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19678 states, 19627 states have (on average 1.3569572527640494) internal successors, (26633), 19645 states have internal predecessors, (26633), 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) [2021-11-06 15:17:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19678 states to 19678 states and 26673 transitions. [2021-11-06 15:17:05,822 INFO L78 Accepts]: Start accepts. Automaton has 19678 states and 26673 transitions. Word has length 24 [2021-11-06 15:17:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:17:05,822 INFO L470 AbstractCegarLoop]: Abstraction has 19678 states and 26673 transitions. [2021-11-06 15:17:05,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:17:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand 19678 states and 26673 transitions. [2021-11-06 15:17:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 15:17:05,831 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:17:05,832 INFO L513 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] [2021-11-06 15:17:05,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:17:05,833 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:17:05,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:17:05,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1536576598, now seen corresponding path program 1 times [2021-11-06 15:17:05,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:17:05,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557923539] [2021-11-06 15:17:05,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:17:05,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:17:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:17:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:17:06,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:17:06,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557923539] [2021-11-06 15:17:06,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557923539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:17:06,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:17:06,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:17:06,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207469995] [2021-11-06 15:17:06,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:17:06,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:17:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:17:06,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:17:06,069 INFO L87 Difference]: Start difference. First operand 19678 states and 26673 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 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) [2021-11-06 15:17:06,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:17:06,756 INFO L93 Difference]: Finished difference Result 39256 states and 53239 transitions. [2021-11-06 15:17:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:17:06,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 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 [2021-11-06 15:17:06,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:17:06,966 INFO L225 Difference]: With dead ends: 39256 [2021-11-06 15:17:06,966 INFO L226 Difference]: Without dead ends: 39224 [2021-11-06 15:17:06,997 INFO L786 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 [2021-11-06 15:17:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39224 states. [2021-11-06 15:17:07,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39224 to 39220. [2021-11-06 15:17:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39220 states, 39139 states have (on average 1.357290681928511) internal successors, (53123), 39155 states have internal predecessors, (53123), 40 states have call successors, (40), 24 states have call predecessors, (40), 24 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 15:17:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39220 states to 39220 states and 53203 transitions. [2021-11-06 15:17:08,036 INFO L78 Accepts]: Start accepts. Automaton has 39220 states and 53203 transitions. Word has length 27 [2021-11-06 15:17:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:17:08,038 INFO L470 AbstractCegarLoop]: Abstraction has 39220 states and 53203 transitions. [2021-11-06 15:17:08,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 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) [2021-11-06 15:17:08,038 INFO L276 IsEmpty]: Start isEmpty. Operand 39220 states and 53203 transitions. [2021-11-06 15:17:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 15:17:08,045 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:17:08,045 INFO L513 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] [2021-11-06 15:17:08,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:17:08,046 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:17:08,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:17:08,046 INFO L85 PathProgramCache]: Analyzing trace with hash 389265743, now seen corresponding path program 1 times [2021-11-06 15:17:08,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:17:08,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919096071] [2021-11-06 15:17:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:17:08,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:17:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:17:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:17:08,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:17:08,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919096071] [2021-11-06 15:17:08,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919096071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:17:08,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:17:08,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:17:08,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454603793] [2021-11-06 15:17:08,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:17:08,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:17:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:17:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:17:08,258 INFO L87 Difference]: Start difference. First operand 39220 states and 53203 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-11-06 15:17:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:17:10,034 INFO L93 Difference]: Finished difference Result 117512 states and 159453 transitions. [2021-11-06 15:17:10,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:17:10,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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 [2021-11-06 15:17:10,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:17:10,380 INFO L225 Difference]: With dead ends: 117512 [2021-11-06 15:17:10,380 INFO L226 Difference]: Without dead ends: 78349 [2021-11-06 15:17:10,506 INFO L786 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 [2021-11-06 15:17:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78349 states. [2021-11-06 15:17:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78349 to 78329. [2021-11-06 15:17:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78329 states, 78184 states have (on average 1.357528394556431) internal successors, (106137), 78200 states have internal predecessors, (106137), 80 states have call successors, (80), 48 states have call predecessors, (80), 48 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-06 15:17:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78329 states to 78329 states and 106297 transitions. [2021-11-06 15:17:13,099 INFO L78 Accepts]: Start accepts. Automaton has 78329 states and 106297 transitions. Word has length 28 [2021-11-06 15:17:13,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:17:13,099 INFO L470 AbstractCegarLoop]: Abstraction has 78329 states and 106297 transitions. [2021-11-06 15:17:13,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 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) [2021-11-06 15:17:13,100 INFO L276 IsEmpty]: Start isEmpty. Operand 78329 states and 106297 transitions. [2021-11-06 15:17:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-06 15:17:13,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:17:13,102 INFO L513 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] [2021-11-06 15:17:13,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:17:13,102 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-06 15:17:13,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:17:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -513397760, now seen corresponding path program 1 times [2021-11-06 15:17:13,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:17:13,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476122996] [2021-11-06 15:17:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:17:13,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:17:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:17:13,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:17:13,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:17:13,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476122996] [2021-11-06 15:17:13,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476122996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:17:13,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:17:13,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:17:13,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350635937] [2021-11-06 15:17:13,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:17:13,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:17:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:17:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:17:13,567 INFO L87 Difference]: Start difference. First operand 78329 states and 106297 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:17:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:17:16,847 INFO L93 Difference]: Finished difference Result 234856 states and 318752 transitions. [2021-11-06 15:17:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:17:16,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-06 15:17:16,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:17:17,798 INFO L225 Difference]: With dead ends: 234856 [2021-11-06 15:17:17,798 INFO L226 Difference]: Without dead ends: 156582 [2021-11-06 15:17:17,960 INFO L786 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 [2021-11-06 15:17:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156582 states. [2021-11-06 15:17:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156582 to 156545. [2021-11-06 15:17:21,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156545 states, 156272 states have (on average 1.3576456434933961) internal successors, (212162), 156288 states have internal predecessors, (212162), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-06 15:17:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156545 states to 156545 states and 212482 transitions. [2021-11-06 15:17:22,036 INFO L78 Accepts]: Start accepts. Automaton has 156545 states and 212482 transitions. Word has length 37 [2021-11-06 15:17:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:17:22,036 INFO L470 AbstractCegarLoop]: Abstraction has 156545 states and 212482 transitions. [2021-11-06 15:17:22,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:17:22,037 INFO L276 IsEmpty]: Start isEmpty. Operand 156545 states and 212482 transitions. [2021-11-06 15:17:22,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-06 15:17:22,039 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:17:22,039 INFO L513 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] [2021-11-06 15:17:22,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:17:22,040 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)] === [2021-11-06 15:17:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:17:22,040 INFO L85 PathProgramCache]: Analyzing trace with hash 666285678, now seen corresponding path program 1 times [2021-11-06 15:17:22,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:17:22,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645699448] [2021-11-06 15:17:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:17:22,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:17:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:17:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:17:23,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:17:23,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645699448] [2021-11-06 15:17:23,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645699448] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:17:23,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:17:23,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 15:17:23,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254765891] [2021-11-06 15:17:23,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 15:17:23,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:17:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 15:17:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:17:23,394 INFO L87 Difference]: Start difference. First operand 156545 states and 212482 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 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)