/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:12:23,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:12:23,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:12:23,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:12:23,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:12:23,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:12:23,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:12:23,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:12:23,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:12:23,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:12:23,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:12:23,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:12:23,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:12:23,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:12:23,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:12:23,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:12:23,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:12:23,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:12:23,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:12:23,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:12:23,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:12:23,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:12:23,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:12:23,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:12:23,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:12:23,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:12:23,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:12:23,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:12:23,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:12:23,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:12:23,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:12:23,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:12:23,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:12:23,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:12:23,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:12:23,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:12:23,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:12:23,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:12:23,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:12:23,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:12:23,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:12:23,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:12:23,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:12:23,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:12:23,609 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:12:23,609 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:12:23,610 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:12:23,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:12:23,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:12:23,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:12:23,612 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:12:23,613 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:12:23,613 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:12:23,613 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:12:23,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:12:23,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:12:23,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:12:23,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:12:23,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:12:23,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:12:23,615 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:12:23,615 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:12:23,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:12:23,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:12:23,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:12:23,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:12:23,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:12:23,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:12:23,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:12:23,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:12:23,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:12:23,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:12:23,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:12:23,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:12:23,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:12:23,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:12:23,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:12:24,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:12:24,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:12:24,022 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:12:24,023 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:12:24,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-10-15 21:12:24,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19597b760/88e387a166674da5b8486905dadaec4e/FLAGedfb581a9 [2022-10-15 21:12:25,200 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:12:25,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-10-15 21:12:25,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19597b760/88e387a166674da5b8486905dadaec4e/FLAGedfb581a9 [2022-10-15 21:12:25,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19597b760/88e387a166674da5b8486905dadaec4e [2022-10-15 21:12:25,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:12:25,590 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:12:25,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:12:25,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:12:25,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:12:25,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:12:25" (1/1) ... [2022-10-15 21:12:25,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db00ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:25, skipping insertion in model container [2022-10-15 21:12:25,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:12:25" (1/1) ... [2022-10-15 21:12:25,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:12:25,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:12:26,759 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2022-10-15 21:12:27,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:12:27,354 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:12:27,523 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2022-10-15 21:12:27,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:12:27,842 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:12:27,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27 WrapperNode [2022-10-15 21:12:27,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:12:27,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:12:27,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:12:27,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:12:27,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:27,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,067 INFO L138 Inliner]: procedures = 175, calls = 797, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 2284 [2022-10-15 21:12:28,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:12:28,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:12:28,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:12:28,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:12:28,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,265 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:12:28,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:12:28,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:12:28,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:12:28,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (1/1) ... [2022-10-15 21:12:28,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:12:28,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:12:28,376 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:12:28,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:12:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-15 21:12:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-15 21:12:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-10-15 21:12:28,482 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-10-15 21:12:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2022-10-15 21:12:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2022-10-15 21:12:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2022-10-15 21:12:28,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2022-10-15 21:12:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:12:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2022-10-15 21:12:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2022-10-15 21:12:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:12:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:12:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-10-15 21:12:28,484 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-10-15 21:12:28,484 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:12:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:12:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:12:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-15 21:12:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-15 21:12:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-10-15 21:12:28,485 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-10-15 21:12:28,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-10-15 21:12:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-10-15 21:12:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:12:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:12:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:12:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:12:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:12:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:12:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-10-15 21:12:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-10-15 21:12:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2022-10-15 21:12:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2022-10-15 21:12:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-15 21:12:28,487 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-15 21:12:28,487 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-15 21:12:28,488 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-15 21:12:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:12:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:12:28,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:12:28,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:12:28,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:12:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:12:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:12:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:12:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:12:28,489 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-15 21:12:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-15 21:12:28,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:12:28,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-10-15 21:12:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-10-15 21:12:28,490 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-10-15 21:12:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-10-15 21:12:28,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:12:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-15 21:12:28,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-15 21:12:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:12:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:12:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-15 21:12:28,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-15 21:12:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-15 21:12:28,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-15 21:12:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-15 21:12:28,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-15 21:12:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:12:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-15 21:12:28,493 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-15 21:12:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-10-15 21:12:28,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-10-15 21:12:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-15 21:12:28,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-15 21:12:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-10-15 21:12:28,493 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-10-15 21:12:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:12:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:12:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2022-10-15 21:12:28,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2022-10-15 21:12:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-15 21:12:28,494 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-15 21:12:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-15 21:12:28,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-15 21:12:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-15 21:12:28,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-15 21:12:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-15 21:12:28,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-15 21:12:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-10-15 21:12:28,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-10-15 21:12:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-15 21:12:28,496 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-15 21:12:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:12:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-15 21:12:28,496 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-15 21:12:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-10-15 21:12:28,496 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-10-15 21:12:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:12:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2022-10-15 21:12:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2022-10-15 21:12:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:12:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:12:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:12:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:12:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2022-10-15 21:12:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2022-10-15 21:12:29,136 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:12:29,139 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:12:29,345 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:12:30,115 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-10-15 21:12:34,266 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:12:34,292 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:12:34,292 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:12:34,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:12:34 BoogieIcfgContainer [2022-10-15 21:12:34,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:12:34,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:12:34,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:12:34,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:12:34,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:12:25" (1/3) ... [2022-10-15 21:12:34,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413eb1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:12:34, skipping insertion in model container [2022-10-15 21:12:34,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:27" (2/3) ... [2022-10-15 21:12:34,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@413eb1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:12:34, skipping insertion in model container [2022-10-15 21:12:34,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:12:34" (3/3) ... [2022-10-15 21:12:34,313 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-10-15 21:12:34,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:12:34,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-10-15 21:12:34,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:12:34,494 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c14a3f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:12:34,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-10-15 21:12:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 730 states, 527 states have (on average 1.3870967741935485) internal successors, (731), 573 states have internal predecessors, (731), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2022-10-15 21:12:34,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 21:12:34,517 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:34,518 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:12:34,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:12:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash -824732324, now seen corresponding path program 1 times [2022-10-15 21:12:34,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:34,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121645984] [2022-10-15 21:12:34,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:34,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:12:35,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:35,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121645984] [2022-10-15 21:12:35,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121645984] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:35,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:35,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:12:35,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318379015] [2022-10-15 21:12:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:35,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:12:35,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:35,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:12:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:12:35,258 INFO L87 Difference]: Start difference. First operand has 730 states, 527 states have (on average 1.3870967741935485) internal successors, (731), 573 states have internal predecessors, (731), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:12:39,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:39,008 INFO L93 Difference]: Finished difference Result 1757 states and 2429 transitions. [2022-10-15 21:12:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:12:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-10-15 21:12:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:39,059 INFO L225 Difference]: With dead ends: 1757 [2022-10-15 21:12:39,060 INFO L226 Difference]: Without dead ends: 977 [2022-10-15 21:12:39,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:12:39,084 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 495 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:39,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2202 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-15 21:12:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-10-15 21:12:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 904. [2022-10-15 21:12:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 670 states have (on average 1.3253731343283581) internal successors, (888), 701 states have internal predecessors, (888), 152 states have call successors, (152), 58 states have call predecessors, (152), 58 states have return successors, (152), 151 states have call predecessors, (152), 152 states have call successors, (152) [2022-10-15 21:12:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1192 transitions. [2022-10-15 21:12:39,305 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1192 transitions. Word has length 28 [2022-10-15 21:12:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:39,306 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1192 transitions. [2022-10-15 21:12:39,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-15 21:12:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1192 transitions. [2022-10-15 21:12:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 21:12:39,312 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:39,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:12:39,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:12:39,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:12:39,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:39,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1682038863, now seen corresponding path program 1 times [2022-10-15 21:12:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:39,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660628359] [2022-10-15 21:12:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:39,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-15 21:12:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:39,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:12:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:12:39,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:39,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660628359] [2022-10-15 21:12:39,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660628359] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:39,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:39,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:12:39,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287614828] [2022-10-15 21:12:39,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:39,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:12:39,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:12:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:12:39,653 INFO L87 Difference]: Start difference. First operand 904 states and 1192 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:12:43,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:12:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:47,715 INFO L93 Difference]: Finished difference Result 2763 states and 3791 transitions. [2022-10-15 21:12:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-15 21:12:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-10-15 21:12:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:47,744 INFO L225 Difference]: With dead ends: 2763 [2022-10-15 21:12:47,745 INFO L226 Difference]: Without dead ends: 1866 [2022-10-15 21:12:47,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:12:47,763 INFO L413 NwaCegarLoop]: 1296 mSDtfsCounter, 2270 mSDsluCounter, 1628 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:47,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 2924 Invalid, 2812 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1059 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-10-15 21:12:47,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2022-10-15 21:12:47,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1504. [2022-10-15 21:12:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1125 states have (on average 1.3342222222222222) internal successors, (1501), 1163 states have internal predecessors, (1501), 256 states have call successors, (256), 99 states have call predecessors, (256), 99 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) [2022-10-15 21:12:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2013 transitions. [2022-10-15 21:12:47,923 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2013 transitions. Word has length 35 [2022-10-15 21:12:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:47,925 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2013 transitions. [2022-10-15 21:12:47,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:12:47,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2013 transitions. [2022-10-15 21:12:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 21:12:47,935 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:47,935 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:12:47,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:12:47,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:12:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -725405720, now seen corresponding path program 1 times [2022-10-15 21:12:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:47,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045474147] [2022-10-15 21:12:47,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:12:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-15 21:12:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:12:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:48,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045474147] [2022-10-15 21:12:48,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045474147] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:48,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:48,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:12:48,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737090350] [2022-10-15 21:12:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:12:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:12:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:12:48,250 INFO L87 Difference]: Start difference. First operand 1504 states and 2013 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:12:52,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:52,978 INFO L93 Difference]: Finished difference Result 3333 states and 4598 transitions. [2022-10-15 21:12:52,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:12:52,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-10-15 21:12:52,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:52,993 INFO L225 Difference]: With dead ends: 3333 [2022-10-15 21:12:52,993 INFO L226 Difference]: Without dead ends: 1845 [2022-10-15 21:12:52,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:12:53,001 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 905 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:53,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2225 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-10-15 21:12:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2022-10-15 21:12:53,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1498. [2022-10-15 21:12:53,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1119 states have (on average 1.3342269883824844) internal successors, (1493), 1158 states have internal predecessors, (1493), 256 states have call successors, (256), 99 states have call predecessors, (256), 99 states have return successors, (256), 253 states have call predecessors, (256), 256 states have call successors, (256) [2022-10-15 21:12:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2005 transitions. [2022-10-15 21:12:53,108 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2005 transitions. Word has length 54 [2022-10-15 21:12:53,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:53,108 INFO L495 AbstractCegarLoop]: Abstraction has 1498 states and 2005 transitions. [2022-10-15 21:12:53,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-15 21:12:53,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2005 transitions. [2022-10-15 21:12:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 21:12:53,111 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:53,112 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:12:53,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:12:53,113 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:12:53,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash 668459002, now seen corresponding path program 1 times [2022-10-15 21:12:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:53,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106752518] [2022-10-15 21:12:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:53,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:53,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:53,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:12:53,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:53,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106752518] [2022-10-15 21:12:53,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106752518] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:53,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:53,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:12:53,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077523999] [2022-10-15 21:12:53,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:53,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:12:53,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:12:53,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:12:53,462 INFO L87 Difference]: Start difference. First operand 1498 states and 2005 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:12:55,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:12:58,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:58,529 INFO L93 Difference]: Finished difference Result 3129 states and 4287 transitions. [2022-10-15 21:12:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:12:58,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-10-15 21:12:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:58,553 INFO L225 Difference]: With dead ends: 3129 [2022-10-15 21:12:58,553 INFO L226 Difference]: Without dead ends: 3125 [2022-10-15 21:12:58,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:12:58,557 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1170 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:58,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2232 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-10-15 21:12:58,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2022-10-15 21:12:58,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2870. [2022-10-15 21:12:58,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2160 states have (on average 1.3305555555555555) internal successors, (2874), 2213 states have internal predecessors, (2874), 495 states have call successors, (495), 191 states have call predecessors, (495), 191 states have return successors, (495), 490 states have call predecessors, (495), 495 states have call successors, (495) [2022-10-15 21:12:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3864 transitions. [2022-10-15 21:12:58,798 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3864 transitions. Word has length 54 [2022-10-15 21:12:58,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:58,800 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 3864 transitions. [2022-10-15 21:12:58,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:12:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3864 transitions. [2022-10-15 21:12:58,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-15 21:12:58,802 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:58,802 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:12:58,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:12:58,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:12:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:58,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1855949060, now seen corresponding path program 1 times [2022-10-15 21:12:58,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:58,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378702698] [2022-10-15 21:12:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:59,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:12:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:59,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378702698] [2022-10-15 21:12:59,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378702698] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:59,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:59,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:12:59,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560340720] [2022-10-15 21:12:59,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:59,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:12:59,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:59,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:12:59,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:12:59,155 INFO L87 Difference]: Start difference. First operand 2870 states and 3864 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:13:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:13:04,351 INFO L93 Difference]: Finished difference Result 4684 states and 6430 transitions. [2022-10-15 21:13:04,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:13:04,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-10-15 21:13:04,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:13:04,383 INFO L225 Difference]: With dead ends: 4684 [2022-10-15 21:13:04,383 INFO L226 Difference]: Without dead ends: 4676 [2022-10-15 21:13:04,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:13:04,387 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 1164 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:13:04,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 2231 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-10-15 21:13:04,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2022-10-15 21:13:04,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4326. [2022-10-15 21:13:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 3266 states have (on average 1.3254745866503368) internal successors, (4329), 3335 states have internal predecessors, (4329), 748 states have call successors, (748), 288 states have call predecessors, (748), 288 states have return successors, (748), 740 states have call predecessors, (748), 748 states have call successors, (748) [2022-10-15 21:13:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 5825 transitions. [2022-10-15 21:13:04,705 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 5825 transitions. Word has length 56 [2022-10-15 21:13:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:13:04,705 INFO L495 AbstractCegarLoop]: Abstraction has 4326 states and 5825 transitions. [2022-10-15 21:13:04,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:13:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 5825 transitions. [2022-10-15 21:13:04,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-15 21:13:04,708 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:13:04,709 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:13:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:13:04,709 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:13:04,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:13:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1498023058, now seen corresponding path program 1 times [2022-10-15 21:13:04,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:13:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415530981] [2022-10-15 21:13:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:13:04,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:13:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:04,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:13:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:13:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:13:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:13:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:13:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-15 21:13:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:13:05,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:13:05,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415530981] [2022-10-15 21:13:05,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415530981] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:13:05,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:13:05,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:13:05,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023871364] [2022-10-15 21:13:05,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:13:05,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:13:05,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:13:05,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:13:05,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:13:05,019 INFO L87 Difference]: Start difference. First operand 4326 states and 5825 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 21:13:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:13:12,170 INFO L93 Difference]: Finished difference Result 8491 states and 11619 transitions. [2022-10-15 21:13:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:13:12,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-10-15 21:13:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:13:12,199 INFO L225 Difference]: With dead ends: 8491 [2022-10-15 21:13:12,199 INFO L226 Difference]: Without dead ends: 4183 [2022-10-15 21:13:12,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:13:12,219 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 747 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:13:12,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2720 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-10-15 21:13:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-10-15 21:13:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3603. [2022-10-15 21:13:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 2758 states have (on average 1.3259608411892676) internal successors, (3657), 2815 states have internal predecessors, (3657), 581 states have call successors, (581), 240 states have call predecessors, (581), 240 states have return successors, (581), 574 states have call predecessors, (581), 581 states have call successors, (581) [2022-10-15 21:13:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4819 transitions. [2022-10-15 21:13:12,533 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 4819 transitions. Word has length 68 [2022-10-15 21:13:12,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:13:12,534 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 4819 transitions. [2022-10-15 21:13:12,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-15 21:13:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 4819 transitions. [2022-10-15 21:13:12,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 21:13:12,536 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:13:12,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:13:12,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:13:12,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:13:12,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:13:12,537 INFO L85 PathProgramCache]: Analyzing trace with hash -191012186, now seen corresponding path program 1 times [2022-10-15 21:13:12,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:13:12,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324795569] [2022-10-15 21:13:12,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:13:12,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:13:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:13:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:13:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:13:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:13:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:13:13,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:13:13,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324795569] [2022-10-15 21:13:13,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324795569] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:13:13,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889289321] [2022-10-15 21:13:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:13:13,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:13:13,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:13:13,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:13:13,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:13:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:13,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:13:13,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:13:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:13:13,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:13:13,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889289321] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:13:13,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:13:13,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-15 21:13:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55914551] [2022-10-15 21:13:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:13:13,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:13:13,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:13:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:13:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:13:13,596 INFO L87 Difference]: Start difference. First operand 3603 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:13:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:13:14,202 INFO L93 Difference]: Finished difference Result 6533 states and 8758 transitions. [2022-10-15 21:13:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:13:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2022-10-15 21:13:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:13:14,225 INFO L225 Difference]: With dead ends: 6533 [2022-10-15 21:13:14,226 INFO L226 Difference]: Without dead ends: 3238 [2022-10-15 21:13:14,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:13:14,239 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 878 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:13:14,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1426 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 21:13:14,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2022-10-15 21:13:14,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3223. [2022-10-15 21:13:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2460 states have (on average 1.325609756097561) internal successors, (3261), 2515 states have internal predecessors, (3261), 529 states have call successors, (529), 210 states have call predecessors, (529), 210 states have return successors, (529), 523 states have call predecessors, (529), 529 states have call successors, (529) [2022-10-15 21:13:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4319 transitions. [2022-10-15 21:13:14,460 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4319 transitions. Word has length 70 [2022-10-15 21:13:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:13:14,460 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4319 transitions. [2022-10-15 21:13:14,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-15 21:13:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4319 transitions. [2022-10-15 21:13:14,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 21:13:14,463 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:13:14,463 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:13:14,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:13:14,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:13:14,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-15 21:13:14,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:13:14,679 INFO L85 PathProgramCache]: Analyzing trace with hash -168107905, now seen corresponding path program 1 times [2022-10-15 21:13:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:13:14,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536462157] [2022-10-15 21:13:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:13:14,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:13:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:13:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:13:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:13:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:13:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:13:14,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:13:14,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536462157] [2022-10-15 21:13:14,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536462157] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:13:14,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599967321] [2022-10-15 21:13:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:13:14,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:13:14,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:13:15,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:13:15,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:13:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:15,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:13:15,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:13:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:13:15,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:13:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:13:15,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599967321] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:13:15,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:13:15,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-15 21:13:15,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996690679] [2022-10-15 21:13:15,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:13:15,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:13:15,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:13:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:13:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:13:15,677 INFO L87 Difference]: Start difference. First operand 3223 states and 4319 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-15 21:13:17,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []