/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--ems_usb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:12:11,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:12:11,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:12:11,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:12:11,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:12:11,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:12:11,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:12:11,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:12:11,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:12:11,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:12:11,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:12:11,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:12:11,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:12:11,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:12:11,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:12:11,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:12:11,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:12:11,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:12:11,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:12:11,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:12:11,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:12:11,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:12:11,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:12:11,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:12:11,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:12:11,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:12:11,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:12:11,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:12:11,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:12:11,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:12:11,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:12:11,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:12:11,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:12:11,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:12:11,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:12:11,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:12:11,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:12:11,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:12:11,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:12:11,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:12:11,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:12:11,681 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 21:12:11,712 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:12:11,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:12:11,713 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:12:11,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:12:11,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:12:11,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:12:11,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:12:11,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:12:11,715 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:12:11,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:12:11,716 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:12:11,716 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:12:11,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:12:11,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:12:11,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:12:11,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:12:11,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:12:11,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:12:11,718 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:12:11,718 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:12:11,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:12:11,719 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:12:11,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:12:11,719 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:12:11,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:12:11,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:12:11,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:12:11,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:12:11,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:12:11,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:12:11,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:12:11,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:12:11,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:12:11,722 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:12:12,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:12:12,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:12:12,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:12:12,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:12:12,195 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:12:12,196 INFO L432 ainManager$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--ems_usb.ko-entry_point.cil.out.i [2022-10-15 21:12:12,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f601ec4/737a068d7b454487b196cd4625f49562/FLAG6778d9868 [2022-10-15 21:12:13,342 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:12:13,343 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--ems_usb.ko-entry_point.cil.out.i [2022-10-15 21:12:13,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f601ec4/737a068d7b454487b196cd4625f49562/FLAG6778d9868 [2022-10-15 21:12:13,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f601ec4/737a068d7b454487b196cd4625f49562 [2022-10-15 21:12:13,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:12:13,824 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:12:13,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:12:13,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:12:13,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:12:13,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:12:13" (1/1) ... [2022-10-15 21:12:13,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1468f818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:13, skipping insertion in model container [2022-10-15 21:12:13,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:12:13" (1/1) ... [2022-10-15 21:12:13,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:12:13,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:12:15,080 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--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-10-15 21:12:15,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:12:15,844 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:12:16,013 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--ems_usb.ko-entry_point.cil.out.i[164250,164263] [2022-10-15 21:12:16,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:12:16,271 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:12:16,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16 WrapperNode [2022-10-15 21:12:16,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:12:16,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:12:16,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:12:16,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:12:16,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,503 INFO L138 Inliner]: procedures = 169, calls = 721, calls flagged for inlining = 77, calls inlined = 77, statements flattened = 2065 [2022-10-15 21:12:16,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:12:16,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:12:16,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:12:16,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:12:16,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,729 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:12:16,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:12:16,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:12:16,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:12:16,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (1/1) ... [2022-10-15 21:12:16,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:12:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:12:16,812 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 21:12:16,816 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 21:12:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-15 21:12:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-15 21:12:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:12:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_18 [2022-10-15 21:12:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_18 [2022-10-15 21:12:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2022-10-15 21:12:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2022-10-15 21:12:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-10-15 21:12:16,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-10-15 21:12:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-10-15 21:12:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-10-15 21:12:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:12:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:12:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:12:16,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:12:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:12:16,878 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-15 21:12:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-15 21:12:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_bulk_callback [2022-10-15 21:12:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_bulk_callback [2022-10-15 21:12:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-10-15 21:12:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-10-15 21:12:16,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-10-15 21:12:16,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-10-15 21:12:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_control_cmd [2022-10-15 21:12:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_control_cmd [2022-10-15 21:12:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-10-15 21:12:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-10-15 21:12:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:12:16,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:12:16,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:12:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:12:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-10-15 21:12:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-10-15 21:12:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-15 21:12:16,881 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-15 21:12:16,881 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-15 21:12:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-15 21:12:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:12:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:12:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-15 21:12:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-15 21:12:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:12:16,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:12:16,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:12:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:12:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:12:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:12:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:12:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-15 21:12:16,883 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-15 21:12:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_command_msg [2022-10-15 21:12:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_command_msg [2022-10-15 21:12:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:12:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-10-15 21:12:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-10-15 21:12:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-10-15 21:12:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-10-15 21:12:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:12:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-10-15 21:12:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-10-15 21:12:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-15 21:12:16,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-15 21:12:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:12:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:12:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_write_mode [2022-10-15 21:12:16,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_write_mode [2022-10-15 21:12:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-15 21:12:16,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-15 21:12:16,886 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-15 21:12:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-15 21:12:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-15 21:12:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-15 21:12:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:12:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_disconnect [2022-10-15 21:12:16,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_disconnect [2022-10-15 21:12:16,887 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-15 21:12:16,888 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-15 21:12:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-10-15 21:12:16,888 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-10-15 21:12:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_read_interrupt_callback [2022-10-15 21:12:16,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_read_interrupt_callback [2022-10-15 21:12:16,888 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-15 21:12:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-15 21:12:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:12:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-10-15 21:12:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-10-15 21:12:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:12:16,889 INFO L130 BoogieDeclarations]: Found specification of procedure ems_usb_rx_err [2022-10-15 21:12:16,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ems_usb_rx_err [2022-10-15 21:12:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-15 21:12:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-15 21:12:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-15 21:12:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-15 21:12:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-15 21:12:16,890 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-15 21:12:16,890 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-15 21:12:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-15 21:12:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-15 21:12:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-15 21:12:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-10-15 21:12:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-10-15 21:12:16,891 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-15 21:12:16,891 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-15 21:12:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:12:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-15 21:12:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-15 21:12:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:12:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:12:16,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:12:16,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:12:16,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:12:17,460 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:12:17,464 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:12:17,660 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:12:18,537 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-10-15 21:12:21,569 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:12:21,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:12:21,585 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:12:21,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:12:21 BoogieIcfgContainer [2022-10-15 21:12:21,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:12:21,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:12:21,591 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:12:21,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:12:21,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:12:13" (1/3) ... [2022-10-15 21:12:21,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfc7f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:12:21, skipping insertion in model container [2022-10-15 21:12:21,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:12:16" (2/3) ... [2022-10-15 21:12:21,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfc7f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:12:21, skipping insertion in model container [2022-10-15 21:12:21,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:12:21" (3/3) ... [2022-10-15 21:12:21,599 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--ems_usb.ko-entry_point.cil.out.i [2022-10-15 21:12:21,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:12:21,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-10-15 21:12:21,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:12:21,710 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;@723a77a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:12:21,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-10-15 21:12:21,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 748 states, 528 states have (on average 1.3958333333333333) internal successors, (737), 589 states have internal predecessors, (737), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) [2022-10-15 21:12:21,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 21:12:21,734 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:21,735 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 21:12:21,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:21,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash 273329453, now seen corresponding path program 1 times [2022-10-15 21:12:21,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:21,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759958588] [2022-10-15 21:12:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:21,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:22,427 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 21:12:22,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:22,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759958588] [2022-10-15 21:12:22,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759958588] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:22,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:22,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:12:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089161089] [2022-10-15 21:12:22,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:22,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:12:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:22,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:12:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:12:22,485 INFO L87 Difference]: Start difference. First operand has 748 states, 528 states have (on average 1.3958333333333333) internal successors, (737), 589 states have internal predecessors, (737), 135 states have call successors, (135), 48 states have call predecessors, (135), 46 states have return successors, (129), 124 states have call predecessors, (129), 129 states have call successors, (129) 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 21:12:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:25,486 INFO L93 Difference]: Finished difference Result 1817 states and 2506 transitions. [2022-10-15 21:12:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:12:25,489 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 21:12:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:25,514 INFO L225 Difference]: With dead ends: 1817 [2022-10-15 21:12:25,514 INFO L226 Difference]: Without dead ends: 1019 [2022-10-15 21:12:25,527 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 21:12:25,532 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 573 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:25,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 2175 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-10-15 21:12:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2022-10-15 21:12:25,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 911. [2022-10-15 21:12:25,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 663 states have (on average 1.3288084464555052) internal successors, (881), 704 states have internal predecessors, (881), 155 states have call successors, (155), 63 states have call predecessors, (155), 63 states have return successors, (155), 150 states have call predecessors, (155), 155 states have call successors, (155) [2022-10-15 21:12:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1191 transitions. [2022-10-15 21:12:25,709 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1191 transitions. Word has length 28 [2022-10-15 21:12:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:25,710 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1191 transitions. [2022-10-15 21:12:25,710 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 21:12:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1191 transitions. [2022-10-15 21:12:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-15 21:12:25,716 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:25,716 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] [2022-10-15 21:12:25,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:12:25,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:25,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:25,718 INFO L85 PathProgramCache]: Analyzing trace with hash 133922023, now seen corresponding path program 1 times [2022-10-15 21:12:25,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:25,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55294088] [2022-10-15 21:12:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:25,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:25,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:12:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:26,011 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 21:12:26,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:26,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55294088] [2022-10-15 21:12:26,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55294088] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:26,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:26,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:12:26,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863592281] [2022-10-15 21:12:26,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:26,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:12:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:12:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:12:26,016 INFO L87 Difference]: Start difference. First operand 911 states and 1191 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:12:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:30,675 INFO L93 Difference]: Finished difference Result 2671 states and 3561 transitions. [2022-10-15 21:12:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:12:30,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-10-15 21:12:30,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:30,691 INFO L225 Difference]: With dead ends: 2671 [2022-10-15 21:12:30,691 INFO L226 Difference]: Without dead ends: 1767 [2022-10-15 21:12:30,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:12:30,705 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 1135 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 3670 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:30,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 3670 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-10-15 21:12:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-10-15 21:12:30,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1515. [2022-10-15 21:12:30,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1120 states have (on average 1.3410714285714285) internal successors, (1502), 1173 states have internal predecessors, (1502), 258 states have call successors, (258), 107 states have call predecessors, (258), 107 states have return successors, (258), 248 states have call predecessors, (258), 258 states have call successors, (258) [2022-10-15 21:12:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2018 transitions. [2022-10-15 21:12:30,838 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2018 transitions. Word has length 31 [2022-10-15 21:12:30,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:30,838 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2018 transitions. [2022-10-15 21:12:30,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-15 21:12:30,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2018 transitions. [2022-10-15 21:12:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 21:12:30,841 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:30,842 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] [2022-10-15 21:12:30,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:12:30,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:30,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:30,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2025977158, now seen corresponding path program 1 times [2022-10-15 21:12:30,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:30,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792921931] [2022-10-15 21:12:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:30,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 21:12:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:31,074 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 21:12:31,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:31,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792921931] [2022-10-15 21:12:31,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792921931] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:31,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:31,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:12:31,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329418038] [2022-10-15 21:12:31,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:31,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:12:31,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:31,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:12:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:12:31,080 INFO L87 Difference]: Start difference. First operand 1515 states and 2018 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (4), 2 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 21:12:34,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:12:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:34,859 INFO L93 Difference]: Finished difference Result 3239 states and 4374 transitions. [2022-10-15 21:12:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:12:34,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (4), 2 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 50 [2022-10-15 21:12:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:34,871 INFO L225 Difference]: With dead ends: 3239 [2022-10-15 21:12:34,872 INFO L226 Difference]: Without dead ends: 1740 [2022-10-15 21:12:34,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:12:34,878 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 290 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:34,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 2457 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-10-15 21:12:34,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2022-10-15 21:12:34,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1509. [2022-10-15 21:12:34,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1114 states have (on average 1.341113105924596) internal successors, (1494), 1168 states have internal predecessors, (1494), 258 states have call successors, (258), 107 states have call predecessors, (258), 107 states have return successors, (258), 247 states have call predecessors, (258), 258 states have call successors, (258) [2022-10-15 21:12:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2010 transitions. [2022-10-15 21:12:34,960 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2010 transitions. Word has length 50 [2022-10-15 21:12:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:34,960 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2010 transitions. [2022-10-15 21:12:34,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (4), 2 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 21:12:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2010 transitions. [2022-10-15 21:12:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-15 21:12:34,963 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:34,964 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 21:12:34,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:12:34,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash 410853253, now seen corresponding path program 1 times [2022-10-15 21:12:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:34,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087537374] [2022-10-15 21:12:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:35,229 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 21:12:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:35,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087537374] [2022-10-15 21:12:35,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087537374] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:35,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:35,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:12:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834733172] [2022-10-15 21:12:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:35,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:12:35,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:12:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:12:35,232 INFO L87 Difference]: Start difference. First operand 1509 states and 2010 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 21:12:40,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:12:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:40,662 INFO L93 Difference]: Finished difference Result 3258 states and 4423 transitions. [2022-10-15 21:12:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:12:40,663 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 21:12:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:40,714 INFO L225 Difference]: With dead ends: 3258 [2022-10-15 21:12:40,714 INFO L226 Difference]: Without dead ends: 3254 [2022-10-15 21:12:40,720 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 21:12:40,721 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1342 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 369 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:40,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2254 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 713 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-10-15 21:12:40,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2022-10-15 21:12:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 2881. [2022-10-15 21:12:40,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 2146 states have (on average 1.3383038210624418) internal successors, (2872), 2224 states have internal predecessors, (2872), 498 states have call successors, (498), 207 states have call predecessors, (498), 207 states have return successors, (498), 477 states have call predecessors, (498), 498 states have call successors, (498) [2022-10-15 21:12:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 3868 transitions. [2022-10-15 21:12:40,909 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 3868 transitions. Word has length 54 [2022-10-15 21:12:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:40,911 INFO L495 AbstractCegarLoop]: Abstraction has 2881 states and 3868 transitions. [2022-10-15 21:12:40,911 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 21:12:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 3868 transitions. [2022-10-15 21:12:40,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-10-15 21:12:40,913 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:40,913 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 21:12:40,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:12:40,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:40,915 INFO L85 PathProgramCache]: Analyzing trace with hash -293352561, now seen corresponding path program 1 times [2022-10-15 21:12:40,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:40,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983612308] [2022-10-15 21:12:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:41,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:41,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:12:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:12:41,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:41,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983612308] [2022-10-15 21:12:41,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983612308] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:41,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:41,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:12:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990762679] [2022-10-15 21:12:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:41,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:12:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:41,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:12:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:12:41,335 INFO L87 Difference]: Start difference. First operand 2881 states and 3868 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 2 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 21:12:43,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:43,472 INFO L93 Difference]: Finished difference Result 5036 states and 6907 transitions. [2022-10-15 21:12:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:12:43,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 2 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 57 [2022-10-15 21:12:43,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:43,509 INFO L225 Difference]: With dead ends: 5036 [2022-10-15 21:12:43,509 INFO L226 Difference]: Without dead ends: 5028 [2022-10-15 21:12:43,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:12:43,514 INFO L413 NwaCegarLoop]: 1112 mSDtfsCounter, 1905 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 754 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 754 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:43,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2000 Valid, 2406 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [754 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-15 21:12:43,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-10-15 21:12:43,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4342. [2022-10-15 21:12:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4342 states, 3247 states have (on average 1.3329226978749615) internal successors, (4328), 3350 states have internal predecessors, (4328), 753 states have call successors, (753), 312 states have call predecessors, (753), 312 states have return successors, (753), 721 states have call predecessors, (753), 753 states have call successors, (753) [2022-10-15 21:12:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 5834 transitions. [2022-10-15 21:12:43,867 INFO L78 Accepts]: Start accepts. Automaton has 4342 states and 5834 transitions. Word has length 57 [2022-10-15 21:12:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:43,868 INFO L495 AbstractCegarLoop]: Abstraction has 4342 states and 5834 transitions. [2022-10-15 21:12:43,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (5), 2 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 21:12:43,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4342 states and 5834 transitions. [2022-10-15 21:12:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-15 21:12:43,871 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:43,871 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 21:12:43,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:12:43,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:43,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:43,872 INFO L85 PathProgramCache]: Analyzing trace with hash 242581882, now seen corresponding path program 1 times [2022-10-15 21:12:43,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:43,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094209193] [2022-10-15 21:12:43,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:43,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:44,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:44,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:44,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-15 21:12:44,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:44,118 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 21:12:44,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:44,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094209193] [2022-10-15 21:12:44,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094209193] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:44,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:12:44,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:12:44,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617569394] [2022-10-15 21:12:44,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:12:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:12:44,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:12:44,122 INFO L87 Difference]: Start difference. First operand 4342 states and 5834 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 21:12:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:47,750 INFO L93 Difference]: Finished difference Result 8323 states and 11238 transitions. [2022-10-15 21:12:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:12:47,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2022-10-15 21:12:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:47,787 INFO L225 Difference]: With dead ends: 8323 [2022-10-15 21:12:47,787 INFO L226 Difference]: Without dead ends: 3999 [2022-10-15 21:12:47,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 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 21:12:47,805 INFO L413 NwaCegarLoop]: 1032 mSDtfsCounter, 537 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:47,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 2164 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-15 21:12:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3999 states. [2022-10-15 21:12:48,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3999 to 3588. [2022-10-15 21:12:48,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 2716 states have (on average 1.3298969072164948) internal successors, (3612), 2796 states have internal predecessors, (3612), 583 states have call successors, (583), 259 states have call predecessors, (583), 259 states have return successors, (583), 560 states have call predecessors, (583), 583 states have call successors, (583) [2022-10-15 21:12:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 4778 transitions. [2022-10-15 21:12:48,047 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 4778 transitions. Word has length 68 [2022-10-15 21:12:48,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:48,047 INFO L495 AbstractCegarLoop]: Abstraction has 3588 states and 4778 transitions. [2022-10-15 21:12:48,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 21:12:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 4778 transitions. [2022-10-15 21:12:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 21:12:48,051 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:48,052 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 21:12:48,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:12:48,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:48,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:48,053 INFO L85 PathProgramCache]: Analyzing trace with hash -75375469, now seen corresponding path program 1 times [2022-10-15 21:12:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:48,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292300199] [2022-10-15 21:12:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,545 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 21:12:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:48,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292300199] [2022-10-15 21:12:48,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292300199] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:12:48,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042156734] [2022-10-15 21:12:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:48,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:12:48,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:12:48,548 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 21:12:48,567 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 21:12:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:48,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:12:48,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:12:49,035 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 21:12:49,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:12:49,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042156734] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:49,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:12:49,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-15 21:12:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446161179] [2022-10-15 21:12:49,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:49,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:12:49,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:49,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:12:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:12:49,038 INFO L87 Difference]: Start difference. First operand 3588 states and 4778 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 21:12:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:49,432 INFO L93 Difference]: Finished difference Result 6529 states and 8721 transitions. [2022-10-15 21:12:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:12:49,433 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 21:12:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:49,458 INFO L225 Difference]: With dead ends: 6529 [2022-10-15 21:12:49,459 INFO L226 Difference]: Without dead ends: 3242 [2022-10-15 21:12:49,473 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 21:12:49,475 INFO L413 NwaCegarLoop]: 1153 mSDtfsCounter, 890 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:49,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1438 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 21:12:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2022-10-15 21:12:49,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 3227. [2022-10-15 21:12:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3227 states, 2438 states have (on average 1.3314191960623463) internal successors, (3246), 2517 states have internal predecessors, (3246), 532 states have call successors, (532), 227 states have call predecessors, (532), 227 states have return successors, (532), 510 states have call predecessors, (532), 532 states have call successors, (532) [2022-10-15 21:12:49,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4310 transitions. [2022-10-15 21:12:49,679 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4310 transitions. Word has length 70 [2022-10-15 21:12:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:49,679 INFO L495 AbstractCegarLoop]: Abstraction has 3227 states and 4310 transitions. [2022-10-15 21:12:49,679 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 21:12:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4310 transitions. [2022-10-15 21:12:49,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 21:12:49,682 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:49,682 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 21:12:49,728 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 21:12:49,896 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 21:12:49,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:49,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash -52471188, now seen corresponding path program 1 times [2022-10-15 21:12:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:49,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615832260] [2022-10-15 21:12:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:49,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:50,186 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 21:12:50,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:50,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615832260] [2022-10-15 21:12:50,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615832260] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:12:50,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062340015] [2022-10-15 21:12:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:50,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:12:50,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:12:50,190 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 21:12:50,214 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 21:12:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:50,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:12:50,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:12:50,717 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 21:12:50,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:12:50,816 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 21:12:50,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062340015] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:12:50,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:12:50,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-15 21:12:50,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684280423] [2022-10-15 21:12:50,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:12:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:12:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:50,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:12:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:12:50,819 INFO L87 Difference]: Start difference. First operand 3227 states and 4310 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 21:12:57,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:12:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:57,377 INFO L93 Difference]: Finished difference Result 3612 states and 4864 transitions. [2022-10-15 21:12:57,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 21:12:57,378 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 70 [2022-10-15 21:12:57,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:57,401 INFO L225 Difference]: With dead ends: 3612 [2022-10-15 21:12:57,401 INFO L226 Difference]: Without dead ends: 3610 [2022-10-15 21:12:57,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:12:57,404 INFO L413 NwaCegarLoop]: 1363 mSDtfsCounter, 3783 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 1109 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1109 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:57,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3929 Valid, 3051 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1109 Valid, 1369 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2022-10-15 21:12:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2022-10-15 21:12:57,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 3225. [2022-10-15 21:12:57,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 2438 states have (on average 1.3297785069729287) internal successors, (3242), 2515 states have internal predecessors, (3242), 532 states have call successors, (532), 227 states have call predecessors, (532), 227 states have return successors, (532), 510 states have call predecessors, (532), 532 states have call successors, (532) [2022-10-15 21:12:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4306 transitions. [2022-10-15 21:12:57,616 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4306 transitions. Word has length 70 [2022-10-15 21:12:57,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:57,618 INFO L495 AbstractCegarLoop]: Abstraction has 3225 states and 4306 transitions. [2022-10-15 21:12:57,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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 21:12:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4306 transitions. [2022-10-15 21:12:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-15 21:12:57,622 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:57,622 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, 1] [2022-10-15 21:12:57,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:12:57,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-15 21:12:57,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:12:57,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:12:57,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1626605315, now seen corresponding path program 1 times [2022-10-15 21:12:57,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:12:57,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198014714] [2022-10-15 21:12:57,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:12:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:12:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:58,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:12:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:12:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:58,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:12:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:58,166 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 21:12:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:12:58,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198014714] [2022-10-15 21:12:58,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198014714] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:12:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131474522] [2022-10-15 21:12:58,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:12:58,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:12:58,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:12:58,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:12:58,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:12:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:12:58,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:12:58,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:12:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:12:58,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:12:58,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131474522] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:12:58,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:12:58,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-15 21:12:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808859747] [2022-10-15 21:12:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:12:58,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:12:58,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:12:58,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:12:58,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:12:58,678 INFO L87 Difference]: Start difference. First operand 3225 states and 4306 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:12:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:12:59,624 INFO L93 Difference]: Finished difference Result 4942 states and 6574 transitions. [2022-10-15 21:12:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:12:59,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2022-10-15 21:12:59,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:12:59,652 INFO L225 Difference]: With dead ends: 4942 [2022-10-15 21:12:59,652 INFO L226 Difference]: Without dead ends: 2018 [2022-10-15 21:12:59,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:12:59,667 INFO L413 NwaCegarLoop]: 1131 mSDtfsCounter, 1621 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:12:59,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 1351 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 21:12:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2022-10-15 21:12:59,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1977. [2022-10-15 21:12:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1977 states, 1498 states have (on average 1.3184245660881175) internal successors, (1975), 1549 states have internal predecessors, (1975), 311 states have call successors, (311), 142 states have call predecessors, (311), 142 states have return successors, (311), 299 states have call predecessors, (311), 311 states have call successors, (311) [2022-10-15 21:12:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1977 states to 1977 states and 2597 transitions. [2022-10-15 21:12:59,787 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 2597 transitions. Word has length 71 [2022-10-15 21:12:59,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:12:59,788 INFO L495 AbstractCegarLoop]: Abstraction has 1977 states and 2597 transitions. [2022-10-15 21:12:59,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:12:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 2597 transitions. [2022-10-15 21:12:59,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-15 21:12:59,790 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:12:59,791 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:12:59,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-15 21:13:00,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:13:00,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-10-15 21:13:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:13:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1372175497, now seen corresponding path program 1 times [2022-10-15 21:13:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:13:00,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363834861] [2022-10-15 21:13:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:13:00,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:13:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:13:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:00,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:13:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:13:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:13:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:00,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:13:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-10-15 21:13:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-15 21:13:00,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:13:00,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363834861] [2022-10-15 21:13:00,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363834861] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:13:00,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:13:00,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:13:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651863965] [2022-10-15 21:13:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:13:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:13:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:13:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:13:00,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:13:00,260 INFO L87 Difference]: Start difference. First operand 1977 states and 2597 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)