/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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--can--usb--kvaser_usb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 13:20:33,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 13:20:33,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 13:20:33,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 13:20:33,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 13:20:33,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 13:20:33,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 13:20:33,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 13:20:33,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 13:20:33,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 13:20:33,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 13:20:33,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 13:20:33,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 13:20:33,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 13:20:33,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 13:20:33,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 13:20:33,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 13:20:33,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 13:20:33,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 13:20:33,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 13:20:33,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 13:20:33,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 13:20:33,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 13:20:33,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 13:20:33,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 13:20:33,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 13:20:33,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 13:20:33,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 13:20:33,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 13:20:33,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 13:20:33,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 13:20:33,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 13:20:33,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 13:20:33,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 13:20:33,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 13:20:33,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 13:20:33,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 13:20:33,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 13:20:33,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 13:20:33,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 13:20:33,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 13:20:33,740 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 [2022-10-16 13:20:33,792 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 13:20:33,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 13:20:33,794 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 13:20:33,794 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 13:20:33,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 13:20:33,795 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 13:20:33,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 13:20:33,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 13:20:33,797 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 13:20:33,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 13:20:33,797 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 13:20:33,797 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 13:20:33,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 13:20:33,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 13:20:33,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 13:20:33,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 13:20:33,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 13:20:33,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 13:20:33,800 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 13:20:33,800 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 13:20:33,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 13:20:33,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 13:20:33,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 13:20:33,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 13:20:33,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 13:20:33,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 13:20:33,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:20:33,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 13:20:33,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 13:20:33,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 13:20:33,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 13:20:33,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 13:20:33,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 13:20:33,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 13:20:34,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 13:20:34,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 13:20:34,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 13:20:34,315 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 13:20:34,316 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 13:20:34,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--can--usb--kvaser_usb.ko-entry_point.cil.out.i [2022-10-16 13:20:34,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4708fe6d/6d62ece4ec3d4db6bcdde5916614846d/FLAG4613ed1ce [2022-10-16 13:20:35,482 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 13:20:35,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--can--usb--kvaser_usb.ko-entry_point.cil.out.i [2022-10-16 13:20:35,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4708fe6d/6d62ece4ec3d4db6bcdde5916614846d/FLAG4613ed1ce [2022-10-16 13:20:35,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4708fe6d/6d62ece4ec3d4db6bcdde5916614846d [2022-10-16 13:20:35,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 13:20:35,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 13:20:35,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 13:20:35,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 13:20:35,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 13:20:35,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:20:35" (1/1) ... [2022-10-16 13:20:35,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfd25a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:35, skipping insertion in model container [2022-10-16 13:20:35,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:20:35" (1/1) ... [2022-10-16 13:20:35,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 13:20:36,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 13:20:36,715 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5632] [2022-10-16 13:20:36,715 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5633-5634] [2022-10-16 13:20:37,035 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--can--usb--kvaser_usb.ko-entry_point.cil.out.i[167514,167527] [2022-10-16 13:20:38,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:20:38,169 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 13:20:38,450 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5632] [2022-10-16 13:20:38,451 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5633-5634] [2022-10-16 13:20:38,464 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-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--can--usb--kvaser_usb.ko-entry_point.cil.out.i[167514,167527] [2022-10-16 13:20:38,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:20:38,843 INFO L208 MainTranslator]: Completed translation [2022-10-16 13:20:38,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38 WrapperNode [2022-10-16 13:20:38,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 13:20:38,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 13:20:38,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 13:20:38,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 13:20:38,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:38,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,128 INFO L138 Inliner]: procedures = 205, calls = 1464, calls flagged for inlining = 88, calls inlined = 65, statements flattened = 2179 [2022-10-16 13:20:39,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 13:20:39,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 13:20:39,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 13:20:39,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 13:20:39,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 13:20:39,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 13:20:39,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 13:20:39,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 13:20:39,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (1/1) ... [2022-10-16 13:20:39,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:20:39,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:20:39,401 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) [2022-10-16 13:20:39,423 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 [2022-10-16 13:20:39,488 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-16 13:20:39,488 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-16 13:20:39,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-16 13:20:39,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-16 13:20:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-16 13:20:39,491 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-16 13:20:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 13:20:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 13:20:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-16 13:20:39,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-16 13:20:39,491 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-10-16 13:20:39,492 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-10-16 13:20:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 13:20:39,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 13:20:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-10-16 13:20:39,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-10-16 13:20:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-16 13:20:39,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-16 13:20:39,492 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_send_msg [2022-10-16 13:20:39,493 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_send_msg [2022-10-16 13:20:39,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 13:20:39,493 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 13:20:39,493 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-16 13:20:39,493 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-16 13:20:39,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 13:20:39,493 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_send_simple_msg [2022-10-16 13:20:39,494 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_send_simple_msg [2022-10-16 13:20:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-16 13:20:39,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-16 13:20:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 13:20:39,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-16 13:20:39,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-16 13:20:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 13:20:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 13:20:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-16 13:20:39,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-16 13:20:39,495 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-16 13:20:39,496 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-16 13:20:39,496 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_unlink_tx_urbs [2022-10-16 13:20:39,496 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_unlink_tx_urbs [2022-10-16 13:20:39,496 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-16 13:20:39,496 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-16 13:20:39,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-16 13:20:39,496 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-16 13:20:39,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-16 13:20:39,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-16 13:20:39,497 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-16 13:20:39,498 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-16 13:20:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-16 13:20:39,498 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-16 13:20:39,498 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-16 13:20:39,499 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-16 13:20:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 13:20:39,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-16 13:20:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-16 13:20:39,500 INFO L130 BoogieDeclarations]: Found specification of procedure can_change_mtu [2022-10-16 13:20:39,500 INFO L138 BoogieDeclarations]: Found implementation of procedure can_change_mtu [2022-10-16 13:20:39,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 13:20:39,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-10-16 13:20:39,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-10-16 13:20:39,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 13:20:39,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-10-16 13:20:39,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-10-16 13:20:39,503 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_remove_interfaces [2022-10-16 13:20:39,503 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_remove_interfaces [2022-10-16 13:20:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-16 13:20:39,504 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-16 13:20:39,504 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-16 13:20:39,505 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-16 13:20:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-16 13:20:39,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-16 13:20:39,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-16 13:20:39,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-16 13:20:39,506 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-16 13:20:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-16 13:20:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-16 13:20:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-16 13:20:39,507 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-10-16 13:20:39,507 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-10-16 13:20:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 13:20:39,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-16 13:20:39,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-16 13:20:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 13:20:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 13:20:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_wait_msg [2022-10-16 13:20:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_wait_msg [2022-10-16 13:20:39,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 13:20:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-16 13:20:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-16 13:20:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-16 13:20:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-16 13:20:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-16 13:20:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-16 13:20:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-10-16 13:20:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-10-16 13:20:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-16 13:20:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-16 13:20:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 13:20:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-16 13:20:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-16 13:20:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 13:20:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 13:20:40,091 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 13:20:40,094 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 13:20:40,316 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-16 13:20:42,397 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 13:20:42,412 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 13:20:42,412 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 13:20:42,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:20:42 BoogieIcfgContainer [2022-10-16 13:20:42,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 13:20:42,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 13:20:42,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 13:20:42,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 13:20:42,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:20:35" (1/3) ... [2022-10-16 13:20:42,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56708dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:20:42, skipping insertion in model container [2022-10-16 13:20:42,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:20:38" (2/3) ... [2022-10-16 13:20:42,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56708dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:20:42, skipping insertion in model container [2022-10-16 13:20:42,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:20:42" (3/3) ... [2022-10-16 13:20:42,426 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--can--usb--kvaser_usb.ko-entry_point.cil.out.i [2022-10-16 13:20:42,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 13:20:42,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-10-16 13:20:42,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 13:20:42,534 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;@6cb39f91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 13:20:42,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-10-16 13:20:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand has 664 states, 460 states have (on average 1.373913043478261) internal successors, (632), 515 states have internal predecessors, (632), 119 states have call successors, (119), 43 states have call predecessors, (119), 42 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) [2022-10-16 13:20:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 13:20:42,556 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:20:42,556 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] [2022-10-16 13:20:42,557 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:20:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:20:42,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1183628375, now seen corresponding path program 1 times [2022-10-16 13:20:42,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:20:42,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81918077] [2022-10-16 13:20:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:20:42,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:20:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:20:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:20:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:20:43,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:20:43,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81918077] [2022-10-16 13:20:43,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81918077] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:20:43,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:20:43,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:20:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321040040] [2022-10-16 13:20:43,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:20:43,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:20:43,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:20:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:20:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:20:43,317 INFO L87 Difference]: Start difference. First operand has 664 states, 460 states have (on average 1.373913043478261) internal successors, (632), 515 states have internal predecessors, (632), 119 states have call successors, (119), 43 states have call predecessors, (119), 42 states have return successors, (115), 115 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-10-16 13:20:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:20:45,659 INFO L93 Difference]: Finished difference Result 1777 states and 2363 transitions. [2022-10-16 13:20:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:20:45,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 29 [2022-10-16 13:20:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:20:45,708 INFO L225 Difference]: With dead ends: 1777 [2022-10-16 13:20:45,708 INFO L226 Difference]: Without dead ends: 1087 [2022-10-16 13:20:45,728 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 [2022-10-16 13:20:45,733 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 689 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:20:45,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1895 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-16 13:20:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-10-16 13:20:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 978. [2022-10-16 13:20:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 706 states have (on average 1.368271954674221) internal successors, (966), 757 states have internal predecessors, (966), 162 states have call successors, (162), 68 states have call predecessors, (162), 68 states have return successors, (162), 162 states have call predecessors, (162), 162 states have call successors, (162) [2022-10-16 13:20:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1290 transitions. [2022-10-16 13:20:45,912 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1290 transitions. Word has length 29 [2022-10-16 13:20:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:20:45,912 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1290 transitions. [2022-10-16 13:20:45,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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) [2022-10-16 13:20:45,913 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1290 transitions. [2022-10-16 13:20:45,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 13:20:45,917 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:20:45,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:20:45,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 13:20:45,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:20:45,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:20:45,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2117622376, now seen corresponding path program 1 times [2022-10-16 13:20:45,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:20:45,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350961300] [2022-10-16 13:20:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:20:45,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:20:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:20:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:46,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:20:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-16 13:20:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:46,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:20:46,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:20:46,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350961300] [2022-10-16 13:20:46,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350961300] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:20:46,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:20:46,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:20:46,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261708207] [2022-10-16 13:20:46,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:20:46,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:20:46,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:20:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:20:46,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:20:46,190 INFO L87 Difference]: Start difference. First operand 978 states and 1290 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-10-16 13:20:47,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:20:47,802 INFO L93 Difference]: Finished difference Result 2444 states and 3242 transitions. [2022-10-16 13:20:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:20:47,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 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 32 [2022-10-16 13:20:47,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:20:47,816 INFO L225 Difference]: With dead ends: 2444 [2022-10-16 13:20:47,816 INFO L226 Difference]: Without dead ends: 1473 [2022-10-16 13:20:47,821 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 [2022-10-16 13:20:47,822 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 783 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:20:47,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 2428 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 13:20:47,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-10-16 13:20:47,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1359. [2022-10-16 13:20:47,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 982 states have (on average 1.3553971486761711) internal successors, (1331), 1039 states have internal predecessors, (1331), 235 states have call successors, (235), 100 states have call predecessors, (235), 100 states have return successors, (235), 235 states have call predecessors, (235), 235 states have call successors, (235) [2022-10-16 13:20:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1801 transitions. [2022-10-16 13:20:47,950 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1801 transitions. Word has length 32 [2022-10-16 13:20:47,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:20:47,951 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 1801 transitions. [2022-10-16 13:20:47,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 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) [2022-10-16 13:20:47,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1801 transitions. [2022-10-16 13:20:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 13:20:47,954 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:20:47,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:20:47,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 13:20:47,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:20:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:20:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash -558343176, now seen corresponding path program 1 times [2022-10-16 13:20:47,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:20:47,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637494395] [2022-10-16 13:20:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:20:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:20:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:20:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:20:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:20:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-16 13:20:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:20:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:20:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637494395] [2022-10-16 13:20:48,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637494395] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:20:48,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:20:48,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:20:48,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567609661] [2022-10-16 13:20:48,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:20:48,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:20:48,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:20:48,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:20:48,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:20:48,211 INFO L87 Difference]: Start difference. First operand 1359 states and 1801 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-10-16 13:20:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:20:49,976 INFO L93 Difference]: Finished difference Result 2799 states and 3739 transitions. [2022-10-16 13:20:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:20:49,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 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 51 [2022-10-16 13:20:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:20:49,989 INFO L225 Difference]: With dead ends: 2799 [2022-10-16 13:20:49,989 INFO L226 Difference]: Without dead ends: 1456 [2022-10-16 13:20:49,994 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 [2022-10-16 13:20:49,996 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 173 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:20:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2248 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 13:20:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-10-16 13:20:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1353. [2022-10-16 13:20:50,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 976 states have (on average 1.3555327868852458) internal successors, (1323), 1034 states have internal predecessors, (1323), 235 states have call successors, (235), 100 states have call predecessors, (235), 100 states have return successors, (235), 234 states have call predecessors, (235), 235 states have call successors, (235) [2022-10-16 13:20:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1793 transitions. [2022-10-16 13:20:50,078 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1793 transitions. Word has length 51 [2022-10-16 13:20:50,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:20:50,079 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1793 transitions. [2022-10-16 13:20:50,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 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) [2022-10-16 13:20:50,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1793 transitions. [2022-10-16 13:20:50,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 13:20:50,082 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:20:50,082 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] [2022-10-16 13:20:50,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 13:20:50,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:20:50,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:20:50,083 INFO L85 PathProgramCache]: Analyzing trace with hash 840699274, now seen corresponding path program 1 times [2022-10-16 13:20:50,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:20:50,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841085683] [2022-10-16 13:20:50,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:20:50,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:20:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:20:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:50,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:20:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:20:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:20:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:20:50,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:20:50,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841085683] [2022-10-16 13:20:50,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841085683] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:20:50,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:20:50,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:20:50,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879950983] [2022-10-16 13:20:50,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:20:50,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:20:50,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:20:50,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:20:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:20:50,443 INFO L87 Difference]: Start difference. First operand 1353 states and 1793 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-10-16 13:20:52,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:20:52,925 INFO L93 Difference]: Finished difference Result 2817 states and 3782 transitions. [2022-10-16 13:20:52,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:20:52,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 55 [2022-10-16 13:20:52,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:20:52,945 INFO L225 Difference]: With dead ends: 2817 [2022-10-16 13:20:52,945 INFO L226 Difference]: Without dead ends: 2813 [2022-10-16 13:20:52,947 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 [2022-10-16 13:20:52,949 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 989 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 2225 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:20:52,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 2225 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-16 13:20:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-10-16 13:20:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2580. [2022-10-16 13:20:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 1886 states have (on average 1.3510074231177094) internal successors, (2548), 1958 states have internal predecessors, (2548), 456 states have call successors, (456), 196 states have call predecessors, (456), 196 states have return successors, (456), 455 states have call predecessors, (456), 456 states have call successors, (456) [2022-10-16 13:20:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3460 transitions. [2022-10-16 13:20:53,116 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3460 transitions. Word has length 55 [2022-10-16 13:20:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:20:53,116 INFO L495 AbstractCegarLoop]: Abstraction has 2580 states and 3460 transitions. [2022-10-16 13:20:53,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-10-16 13:20:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3460 transitions. [2022-10-16 13:20:53,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-16 13:20:53,119 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:20:53,119 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, 1] [2022-10-16 13:20:53,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 13:20:53,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:20:53,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:20:53,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1068156697, now seen corresponding path program 1 times [2022-10-16 13:20:53,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:20:53,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137675192] [2022-10-16 13:20:53,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:20:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:20:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:20:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:20:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:20:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:20:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:53,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:20:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:20:53,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:20:53,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137675192] [2022-10-16 13:20:53,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137675192] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:20:53,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:20:53,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:20:53,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16389415] [2022-10-16 13:20:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:20:53,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:20:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:20:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:20:53,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:20:53,488 INFO L87 Difference]: Start difference. First operand 2580 states and 3460 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-10-16 13:20:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:20:56,230 INFO L93 Difference]: Finished difference Result 4193 states and 5680 transitions. [2022-10-16 13:20:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:20:56,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 58 [2022-10-16 13:20:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:20:56,299 INFO L225 Difference]: With dead ends: 4193 [2022-10-16 13:20:56,299 INFO L226 Difference]: Without dead ends: 4185 [2022-10-16 13:20:56,301 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 [2022-10-16 13:20:56,302 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 1051 mSDsluCounter, 1707 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:20:56,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 2850 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-16 13:20:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2022-10-16 13:20:56,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3873. [2022-10-16 13:20:56,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3873 states, 2849 states have (on average 1.3453843453843455) internal successors, (3833), 2938 states have internal predecessors, (3833), 688 states have call successors, (688), 294 states have call predecessors, (688), 294 states have return successors, (688), 686 states have call predecessors, (688), 688 states have call successors, (688) [2022-10-16 13:20:56,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 5209 transitions. [2022-10-16 13:20:56,596 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 5209 transitions. Word has length 58 [2022-10-16 13:20:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:20:56,597 INFO L495 AbstractCegarLoop]: Abstraction has 3873 states and 5209 transitions. [2022-10-16 13:20:56,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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) [2022-10-16 13:20:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 5209 transitions. [2022-10-16 13:20:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 13:20:56,600 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:20:56,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:20:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 13:20:56,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting kvaser_usb_remove_interfacesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:20:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:20:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1950449773, now seen corresponding path program 1 times [2022-10-16 13:20:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:20:56,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473024489] [2022-10-16 13:20:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:20:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:20:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:56,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:20:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:20:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:20:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:56,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:20:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 13:20:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-16 13:20:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:20:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:20:56,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:20:56,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473024489] [2022-10-16 13:20:56,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473024489] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:20:56,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:20:56,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:20:56,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142966566] [2022-10-16 13:20:56,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:20:56,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:20:56,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:20:56,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:20:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:20:56,904 INFO L87 Difference]: Start difference. First operand 3873 states and 5209 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:21:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:00,759 INFO L93 Difference]: Finished difference Result 8654 states and 11720 transitions. [2022-10-16 13:21:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:21:00,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2022-10-16 13:21:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:00,797 INFO L225 Difference]: With dead ends: 8654 [2022-10-16 13:21:00,797 INFO L226 Difference]: Without dead ends: 4799 [2022-10-16 13:21:00,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:21:00,814 INFO L413 NwaCegarLoop]: 1080 mSDtfsCounter, 1145 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:00,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 2391 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-16 13:21:00,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-10-16 13:21:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4385. [2022-10-16 13:21:01,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 3238 states have (on average 1.3443483631871527) internal successors, (4353), 3333 states have internal predecessors, (4353), 766 states have call successors, (766), 339 states have call predecessors, (766), 339 states have return successors, (766), 764 states have call predecessors, (766), 766 states have call successors, (766) [2022-10-16 13:21:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 5885 transitions. [2022-10-16 13:21:01,114 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 5885 transitions. Word has length 66 [2022-10-16 13:21:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:01,114 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 5885 transitions. [2022-10-16 13:21:01,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:21:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 5885 transitions. [2022-10-16 13:21:01,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-16 13:21:01,118 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:01,118 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:01,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 13:21:01,119 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:01,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1661071643, now seen corresponding path program 1 times [2022-10-16 13:21:01,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:01,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315487855] [2022-10-16 13:21:01,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:01,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:01,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:01,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:21:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:01,474 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:21:01,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:01,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315487855] [2022-10-16 13:21:01,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315487855] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:01,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:21:01,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:21:01,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90475774] [2022-10-16 13:21:01,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:01,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:21:01,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:01,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:21:01,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:21:01,477 INFO L87 Difference]: Start difference. First operand 4385 states and 5885 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:21:03,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:03,833 INFO L93 Difference]: Finished difference Result 7124 states and 10264 transitions. [2022-10-16 13:21:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:21:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-10-16 13:21:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:03,880 INFO L225 Difference]: With dead ends: 7124 [2022-10-16 13:21:03,880 INFO L226 Difference]: Without dead ends: 7122 [2022-10-16 13:21:03,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:21:03,885 INFO L413 NwaCegarLoop]: 1140 mSDtfsCounter, 553 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:03,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 3014 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 13:21:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2022-10-16 13:21:04,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 4547. [2022-10-16 13:21:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 3388 states have (on average 1.3485832349468714) internal successors, (4569), 3483 states have internal predecessors, (4569), 778 states have call successors, (778), 339 states have call predecessors, (778), 339 states have return successors, (778), 776 states have call predecessors, (778), 778 states have call successors, (778) [2022-10-16 13:21:04,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 6125 transitions. [2022-10-16 13:21:04,240 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 6125 transitions. Word has length 65 [2022-10-16 13:21:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:04,241 INFO L495 AbstractCegarLoop]: Abstraction has 4547 states and 6125 transitions. [2022-10-16 13:21:04,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:21:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 6125 transitions. [2022-10-16 13:21:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 13:21:04,244 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:04,245 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1] [2022-10-16 13:21:04,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-16 13:21:04,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1699705100, now seen corresponding path program 1 times [2022-10-16 13:21:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:04,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725908619] [2022-10-16 13:21:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:04,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:04,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:04,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:04,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:21:04,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:04,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725908619] [2022-10-16 13:21:04,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725908619] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:04,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:21:04,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:21:04,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442488573] [2022-10-16 13:21:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:04,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:21:04,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:04,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:21:04,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:21:04,521 INFO L87 Difference]: Start difference. First operand 4547 states and 6125 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-10-16 13:21:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:06,911 INFO L93 Difference]: Finished difference Result 11342 states and 15169 transitions. [2022-10-16 13:21:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:21:06,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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 72 [2022-10-16 13:21:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:06,958 INFO L225 Difference]: With dead ends: 11342 [2022-10-16 13:21:06,958 INFO L226 Difference]: Without dead ends: 6828 [2022-10-16 13:21:06,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:21:06,978 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 724 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:06,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2339 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 13:21:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2022-10-16 13:21:07,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 6281. [2022-10-16 13:21:07,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6281 states, 4728 states have (on average 1.337351945854484) internal successors, (6323), 4830 states have internal predecessors, (6323), 969 states have call successors, (969), 542 states have call predecessors, (969), 542 states have return successors, (969), 965 states have call predecessors, (969), 969 states have call successors, (969) [2022-10-16 13:21:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 8261 transitions. [2022-10-16 13:21:07,452 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 8261 transitions. Word has length 72 [2022-10-16 13:21:07,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:07,454 INFO L495 AbstractCegarLoop]: Abstraction has 6281 states and 8261 transitions. [2022-10-16 13:21:07,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2022-10-16 13:21:07,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 8261 transitions. [2022-10-16 13:21:07,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 13:21:07,460 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:07,460 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:07,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-16 13:21:07,461 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:07,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:07,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1722609381, now seen corresponding path program 1 times [2022-10-16 13:21:07,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:07,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296415874] [2022-10-16 13:21:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:21:07,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:07,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296415874] [2022-10-16 13:21:07,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296415874] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:21:07,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263498213] [2022-10-16 13:21:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:07,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:07,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:21:07,805 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) [2022-10-16 13:21:07,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 13:21:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:08,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:21:08,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:21:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 13:21:08,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:21:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:21:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263498213] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:21:08,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:21:08,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-16 13:21:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105441372] [2022-10-16 13:21:08,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:21:08,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:21:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:08,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:21:08,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:21:08,479 INFO L87 Difference]: Start difference. First operand 6281 states and 8261 transitions. Second operand has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2022-10-16 13:21:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:14,274 INFO L93 Difference]: Finished difference Result 14397 states and 18978 transitions. [2022-10-16 13:21:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 13:21:14,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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 72 [2022-10-16 13:21:14,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:14,350 INFO L225 Difference]: With dead ends: 14397 [2022-10-16 13:21:14,350 INFO L226 Difference]: Without dead ends: 14395 [2022-10-16 13:21:14,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-10-16 13:21:14,360 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 5610 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 1419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5961 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1419 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:14,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5961 Valid, 3772 Invalid, 3964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1419 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-10-16 13:21:14,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14395 states. [2022-10-16 13:21:15,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14395 to 10149. [2022-10-16 13:21:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10149 states, 7603 states have (on average 1.3311850585295277) internal successors, (10121), 7744 states have internal predecessors, (10121), 1605 states have call successors, (1605), 900 states have call predecessors, (1605), 900 states have return successors, (1605), 1601 states have call predecessors, (1605), 1605 states have call successors, (1605) [2022-10-16 13:21:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10149 states to 10149 states and 13331 transitions. [2022-10-16 13:21:15,163 INFO L78 Accepts]: Start accepts. Automaton has 10149 states and 13331 transitions. Word has length 72 [2022-10-16 13:21:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:15,164 INFO L495 AbstractCegarLoop]: Abstraction has 10149 states and 13331 transitions. [2022-10-16 13:21:15,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 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) [2022-10-16 13:21:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 10149 states and 13331 transitions. [2022-10-16 13:21:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 13:21:15,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:15,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:15,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 13:21:15,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:15,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:15,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:15,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1861284544, now seen corresponding path program 1 times [2022-10-16 13:21:15,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:15,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441409575] [2022-10-16 13:21:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:15,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:15,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:15,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:21:15,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:15,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441409575] [2022-10-16 13:21:15,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441409575] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:21:15,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370062883] [2022-10-16 13:21:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:15,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:15,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:21:15,850 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) [2022-10-16 13:21:15,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 13:21:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:16,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:21:16,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:21:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 13:21:16,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:21:16,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370062883] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:16,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:21:16,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-16 13:21:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692220237] [2022-10-16 13:21:16,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:21:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:21:16,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:21:16,378 INFO L87 Difference]: Start difference. First operand 10149 states and 13331 transitions. Second operand has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-10-16 13:21:17,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:17,776 INFO L93 Difference]: Finished difference Result 27497 states and 36019 transitions. [2022-10-16 13:21:17,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:21:17,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 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 73 [2022-10-16 13:21:17,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:17,858 INFO L225 Difference]: With dead ends: 27497 [2022-10-16 13:21:17,858 INFO L226 Difference]: Without dead ends: 18730 [2022-10-16 13:21:17,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:21:17,893 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 1577 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:17,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3105 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 13:21:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states. [2022-10-16 13:21:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18730 to 17777. [2022-10-16 13:21:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17777 states, 13306 states have (on average 1.3289493461596273) internal successors, (17683), 13522 states have internal predecessors, (17683), 2840 states have call successors, (2840), 1590 states have call predecessors, (2840), 1590 states have return successors, (2840), 2836 states have call predecessors, (2840), 2840 states have call successors, (2840) [2022-10-16 13:21:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17777 states to 17777 states and 23363 transitions. [2022-10-16 13:21:19,315 INFO L78 Accepts]: Start accepts. Automaton has 17777 states and 23363 transitions. Word has length 73 [2022-10-16 13:21:19,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:19,316 INFO L495 AbstractCegarLoop]: Abstraction has 17777 states and 23363 transitions. [2022-10-16 13:21:19,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-10-16 13:21:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 17777 states and 23363 transitions. [2022-10-16 13:21:19,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 13:21:19,320 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:19,321 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:19,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-16 13:21:19,536 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,SelfDestructingSolverStorable9 [2022-10-16 13:21:19,536 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash 858431202, now seen corresponding path program 1 times [2022-10-16 13:21:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663725780] [2022-10-16 13:21:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:19,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:19,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:19,910 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:21:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:19,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663725780] [2022-10-16 13:21:19,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663725780] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:19,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:21:19,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:21:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503896814] [2022-10-16 13:21:19,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:19,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:21:19,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:19,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:21:19,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:21:19,915 INFO L87 Difference]: Start difference. First operand 17777 states and 23363 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-10-16 13:21:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:22,466 INFO L93 Difference]: Finished difference Result 25236 states and 33399 transitions. [2022-10-16 13:21:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:21:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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 73 [2022-10-16 13:21:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:22,495 INFO L225 Difference]: With dead ends: 25236 [2022-10-16 13:21:22,495 INFO L226 Difference]: Without dead ends: 7492 [2022-10-16 13:21:22,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:21:22,538 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 665 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:22,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1885 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 13:21:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-10-16 13:21:23,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 6865. [2022-10-16 13:21:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6865 states, 5297 states have (on average 1.3481215782518408) internal successors, (7141), 5386 states have internal predecessors, (7141), 973 states have call successors, (973), 556 states have call predecessors, (973), 556 states have return successors, (973), 971 states have call predecessors, (973), 973 states have call successors, (973) [2022-10-16 13:21:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6865 states to 6865 states and 9087 transitions. [2022-10-16 13:21:23,104 INFO L78 Accepts]: Start accepts. Automaton has 6865 states and 9087 transitions. Word has length 73 [2022-10-16 13:21:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:23,105 INFO L495 AbstractCegarLoop]: Abstraction has 6865 states and 9087 transitions. [2022-10-16 13:21:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-10-16 13:21:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6865 states and 9087 transitions. [2022-10-16 13:21:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 13:21:23,107 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:23,107 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 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] [2022-10-16 13:21:23,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-16 13:21:23,107 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash -163689690, now seen corresponding path program 1 times [2022-10-16 13:21:23,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:23,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879049320] [2022-10-16 13:21:23,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:23,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:23,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:21:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:23,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 13:21:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 13:21:23,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:23,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879049320] [2022-10-16 13:21:23,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879049320] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:23,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:21:23,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:21:23,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416457405] [2022-10-16 13:21:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:23,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:21:23,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:23,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:21:23,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:21:23,429 INFO L87 Difference]: Start difference. First operand 6865 states and 9087 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-10-16 13:21:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:26,455 INFO L93 Difference]: Finished difference Result 18727 states and 25041 transitions. [2022-10-16 13:21:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:21:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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) Word has length 76 [2022-10-16 13:21:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:26,502 INFO L225 Difference]: With dead ends: 18727 [2022-10-16 13:21:26,503 INFO L226 Difference]: Without dead ends: 12280 [2022-10-16 13:21:26,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:21:26,524 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 1245 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:26,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 3702 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-16 13:21:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12280 states. [2022-10-16 13:21:27,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12280 to 6887. [2022-10-16 13:21:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6887 states, 5319 states have (on average 1.3466817070877986) internal successors, (7163), 5408 states have internal predecessors, (7163), 973 states have call successors, (973), 556 states have call predecessors, (973), 556 states have return successors, (973), 971 states have call predecessors, (973), 973 states have call successors, (973) [2022-10-16 13:21:27,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9109 transitions. [2022-10-16 13:21:27,191 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9109 transitions. Word has length 76 [2022-10-16 13:21:27,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:27,192 INFO L495 AbstractCegarLoop]: Abstraction has 6887 states and 9109 transitions. [2022-10-16 13:21:27,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-10-16 13:21:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9109 transitions. [2022-10-16 13:21:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-16 13:21:27,194 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:27,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:27,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 13:21:27,194 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:27,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1865247303, now seen corresponding path program 1 times [2022-10-16 13:21:27,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:27,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622456463] [2022-10-16 13:21:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:27,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:27,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:21:27,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:27,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622456463] [2022-10-16 13:21:27,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622456463] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:21:27,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86213480] [2022-10-16 13:21:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:27,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:27,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:21:27,503 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) [2022-10-16 13:21:27,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 13:21:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:28,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1697 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:21:28,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:21:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 13:21:28,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:21:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:21:28,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86213480] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:21:28,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:21:28,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-16 13:21:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013440547] [2022-10-16 13:21:28,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:21:28,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:21:28,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:28,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:21:28,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:21:28,409 INFO L87 Difference]: Start difference. First operand 6887 states and 9109 transitions. Second operand has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2022-10-16 13:21:34,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:34,926 INFO L93 Difference]: Finished difference Result 16990 states and 22739 transitions. [2022-10-16 13:21:34,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 13:21:34,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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 74 [2022-10-16 13:21:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:34,978 INFO L225 Difference]: With dead ends: 16990 [2022-10-16 13:21:34,978 INFO L226 Difference]: Without dead ends: 16986 [2022-10-16 13:21:34,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-10-16 13:21:34,986 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 4588 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 1154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4856 SdHoareTripleChecker+Valid, 4096 SdHoareTripleChecker+Invalid, 3589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1154 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:34,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4856 Valid, 4096 Invalid, 3589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1154 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-10-16 13:21:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16986 states. [2022-10-16 13:21:36,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16986 to 10206. [2022-10-16 13:21:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10206 states, 7956 states have (on average 1.350930115635998) internal successors, (10748), 8060 states have internal predecessors, (10748), 1414 states have call successors, (1414), 799 states have call predecessors, (1414), 799 states have return successors, (1414), 1411 states have call predecessors, (1414), 1414 states have call successors, (1414) [2022-10-16 13:21:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10206 states to 10206 states and 13576 transitions. [2022-10-16 13:21:36,071 INFO L78 Accepts]: Start accepts. Automaton has 10206 states and 13576 transitions. Word has length 74 [2022-10-16 13:21:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:36,072 INFO L495 AbstractCegarLoop]: Abstraction has 10206 states and 13576 transitions. [2022-10-16 13:21:36,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 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) [2022-10-16 13:21:36,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10206 states and 13576 transitions. [2022-10-16 13:21:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-16 13:21:36,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:36,074 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:36,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 13:21:36,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:36,289 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2109241003, now seen corresponding path program 1 times [2022-10-16 13:21:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:36,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880225815] [2022-10-16 13:21:36,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:36,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:36,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:36,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:21:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:36,669 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:21:36,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880225815] [2022-10-16 13:21:36,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880225815] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:21:36,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787491764] [2022-10-16 13:21:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:36,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:36,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:21:36,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:21:36,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 13:21:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:37,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:21:37,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:21:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:21:37,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:21:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:21:37,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787491764] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:21:37,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:21:37,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-10-16 13:21:37,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868753595] [2022-10-16 13:21:37,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:21:37,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 13:21:37,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:37,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 13:21:37,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:21:37,187 INFO L87 Difference]: Start difference. First operand 10206 states and 13576 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:21:42,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:42,377 INFO L93 Difference]: Finished difference Result 26040 states and 38272 transitions. [2022-10-16 13:21:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:21:42,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-10-16 13:21:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:42,479 INFO L225 Difference]: With dead ends: 26040 [2022-10-16 13:21:42,479 INFO L226 Difference]: Without dead ends: 26039 [2022-10-16 13:21:42,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:21:42,497 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 2220 mSDsluCounter, 4058 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 5474 SdHoareTripleChecker+Invalid, 2623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:42,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2617 Valid, 5474 Invalid, 2623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-16 13:21:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26039 states. [2022-10-16 13:21:43,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26039 to 10205. [2022-10-16 13:21:43,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10205 states, 7956 states have (on average 1.3485419808949222) internal successors, (10729), 8059 states have internal predecessors, (10729), 1414 states have call successors, (1414), 799 states have call predecessors, (1414), 799 states have return successors, (1414), 1411 states have call predecessors, (1414), 1414 states have call successors, (1414) [2022-10-16 13:21:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 13557 transitions. [2022-10-16 13:21:44,016 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 13557 transitions. Word has length 76 [2022-10-16 13:21:44,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:44,017 INFO L495 AbstractCegarLoop]: Abstraction has 10205 states and 13557 transitions. [2022-10-16 13:21:44,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:21:44,017 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 13557 transitions. [2022-10-16 13:21:44,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 13:21:44,019 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:44,019 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:44,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 13:21:44,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:44,234 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:44,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1988092834, now seen corresponding path program 1 times [2022-10-16 13:21:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:44,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141553981] [2022-10-16 13:21:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:44,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:21:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:44,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141553981] [2022-10-16 13:21:44,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141553981] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:21:44,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261801797] [2022-10-16 13:21:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:44,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:44,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:21:44,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:21:44,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 13:21:44,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:44,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:21:44,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:21:44,995 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 13:21:44,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:21:44,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261801797] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:44,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:21:44,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-16 13:21:44,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174203457] [2022-10-16 13:21:44,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:44,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:21:44,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:21:44,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:21:44,998 INFO L87 Difference]: Start difference. First operand 10205 states and 13557 transitions. Second operand has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-10-16 13:21:46,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:46,541 INFO L93 Difference]: Finished difference Result 18006 states and 23883 transitions. [2022-10-16 13:21:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:21:46,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 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 75 [2022-10-16 13:21:46,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:46,587 INFO L225 Difference]: With dead ends: 18006 [2022-10-16 13:21:46,587 INFO L226 Difference]: Without dead ends: 18002 [2022-10-16 13:21:46,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:21:46,594 INFO L413 NwaCegarLoop]: 1306 mSDtfsCounter, 1555 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:46,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 2491 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:21:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18002 states. [2022-10-16 13:21:47,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18002 to 16402. [2022-10-16 13:21:47,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16402 states, 12766 states have (on average 1.3455271815760614) internal successors, (17177), 12919 states have internal predecessors, (17177), 2295 states have call successors, (2295), 1305 states have call predecessors, (2295), 1305 states have return successors, (2295), 2291 states have call predecessors, (2295), 2295 states have call successors, (2295) [2022-10-16 13:21:47,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16402 states to 16402 states and 21767 transitions. [2022-10-16 13:21:47,817 INFO L78 Accepts]: Start accepts. Automaton has 16402 states and 21767 transitions. Word has length 75 [2022-10-16 13:21:47,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:47,818 INFO L495 AbstractCegarLoop]: Abstraction has 16402 states and 21767 transitions. [2022-10-16 13:21:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-10-16 13:21:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 16402 states and 21767 transitions. [2022-10-16 13:21:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-16 13:21:47,820 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:47,820 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:47,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-16 13:21:48,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 13:21:48,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash -961961151, now seen corresponding path program 1 times [2022-10-16 13:21:48,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:48,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712996875] [2022-10-16 13:21:48,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:48,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:48,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:48,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:21:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:21:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:48,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712996875] [2022-10-16 13:21:48,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712996875] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:21:48,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477449195] [2022-10-16 13:21:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:48,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:48,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:21:48,401 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:21:48,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 13:21:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:48,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:21:48,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:21:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:21:48,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:21:48,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477449195] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:48,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:21:48,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-16 13:21:48,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946749542] [2022-10-16 13:21:48,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:48,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:21:48,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:21:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:21:48,829 INFO L87 Difference]: Start difference. First operand 16402 states and 21767 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:21:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:50,565 INFO L93 Difference]: Finished difference Result 24971 states and 34755 transitions. [2022-10-16 13:21:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:21:50,566 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2022-10-16 13:21:50,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:50,656 INFO L225 Difference]: With dead ends: 24971 [2022-10-16 13:21:50,656 INFO L226 Difference]: Without dead ends: 24970 [2022-10-16 13:21:50,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:21:50,676 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 748 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:50,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 3359 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 13:21:50,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24970 states. [2022-10-16 13:21:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24970 to 15645. [2022-10-16 13:21:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15645 states, 12066 states have (on average 1.3377258412066966) internal successors, (16141), 12218 states have internal predecessors, (16141), 2239 states have call successors, (2239), 1305 states have call predecessors, (2239), 1305 states have return successors, (2239), 2235 states have call predecessors, (2239), 2239 states have call successors, (2239) [2022-10-16 13:21:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15645 states to 15645 states and 20619 transitions. [2022-10-16 13:21:52,202 INFO L78 Accepts]: Start accepts. Automaton has 15645 states and 20619 transitions. Word has length 77 [2022-10-16 13:21:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:52,203 INFO L495 AbstractCegarLoop]: Abstraction has 15645 states and 20619 transitions. [2022-10-16 13:21:52,203 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), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:21:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 15645 states and 20619 transitions. [2022-10-16 13:21:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-16 13:21:52,206 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:52,206 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:52,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 13:21:52,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 13:21:52,422 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting kvaser_usb_remove_interfacesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1740807704, now seen corresponding path program 1 times [2022-10-16 13:21:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:52,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443969146] [2022-10-16 13:21:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:21:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:21:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-16 13:21:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 13:21:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:52,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443969146] [2022-10-16 13:21:52,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443969146] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:52,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:21:52,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:21:52,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353843213] [2022-10-16 13:21:52,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:52,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:21:52,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:52,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:21:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:21:52,761 INFO L87 Difference]: Start difference. First operand 15645 states and 20619 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-16 13:21:56,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:21:56,632 INFO L93 Difference]: Finished difference Result 18823 states and 25577 transitions. [2022-10-16 13:21:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:21:56,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2022-10-16 13:21:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:21:56,675 INFO L225 Difference]: With dead ends: 18823 [2022-10-16 13:21:56,676 INFO L226 Difference]: Without dead ends: 18819 [2022-10-16 13:21:56,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:21:56,683 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 492 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:21:56,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 2464 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-16 13:21:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18819 states. [2022-10-16 13:21:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18819 to 16125. [2022-10-16 13:21:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16125 states, 12514 states have (on average 1.3358638325075916) internal successors, (16717), 12666 states have internal predecessors, (16717), 2271 states have call successors, (2271), 1305 states have call predecessors, (2271), 1305 states have return successors, (2271), 2267 states have call predecessors, (2271), 2271 states have call successors, (2271) [2022-10-16 13:21:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 21259 transitions. [2022-10-16 13:21:58,089 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 21259 transitions. Word has length 88 [2022-10-16 13:21:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:21:58,090 INFO L495 AbstractCegarLoop]: Abstraction has 16125 states and 21259 transitions. [2022-10-16 13:21:58,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-16 13:21:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 21259 transitions. [2022-10-16 13:21:58,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-16 13:21:58,094 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:21:58,094 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:21:58,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-16 13:21:58,094 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting kvaser_usb_remove_interfacesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:21:58,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:21:58,095 INFO L85 PathProgramCache]: Analyzing trace with hash -480069376, now seen corresponding path program 1 times [2022-10-16 13:21:58,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:21:58,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164343129] [2022-10-16 13:21:58,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:58,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:21:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:21:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:21:58,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:21:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:21:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:21:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-10-16 13:21:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-16 13:21:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-10-16 13:21:58,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:21:58,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164343129] [2022-10-16 13:21:58,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164343129] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:21:58,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043007188] [2022-10-16 13:21:58,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:21:58,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:21:58,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:21:58,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:21:58,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 13:21:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:21:59,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 13:21:59,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:21:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 13:21:59,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:21:59,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043007188] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:21:59,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:21:59,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-10-16 13:21:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383692633] [2022-10-16 13:21:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:21:59,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:21:59,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:21:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:21:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:21:59,080 INFO L87 Difference]: Start difference. First operand 16125 states and 21259 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:22:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:01,967 INFO L93 Difference]: Finished difference Result 45539 states and 60480 transitions. [2022-10-16 13:22:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:22:01,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2022-10-16 13:22:01,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:02,039 INFO L225 Difference]: With dead ends: 45539 [2022-10-16 13:22:02,039 INFO L226 Difference]: Without dead ends: 29460 [2022-10-16 13:22:02,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-10-16 13:22:02,070 INFO L413 NwaCegarLoop]: 1723 mSDtfsCounter, 1678 mSDsluCounter, 5738 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 7461 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:02,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 7461 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 13:22:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2022-10-16 13:22:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 16181. [2022-10-16 13:22:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16181 states, 12570 states have (on average 1.3343675417661098) internal successors, (16773), 12722 states have internal predecessors, (16773), 2271 states have call successors, (2271), 1305 states have call predecessors, (2271), 1305 states have return successors, (2271), 2267 states have call predecessors, (2271), 2271 states have call successors, (2271) [2022-10-16 13:22:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16181 states to 16181 states and 21315 transitions. [2022-10-16 13:22:03,776 INFO L78 Accepts]: Start accepts. Automaton has 16181 states and 21315 transitions. Word has length 94 [2022-10-16 13:22:03,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:22:03,777 INFO L495 AbstractCegarLoop]: Abstraction has 16181 states and 21315 transitions. [2022-10-16 13:22:03,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:22:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 16181 states and 21315 transitions. [2022-10-16 13:22:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-16 13:22:03,780 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:22:03,780 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:22:03,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-10-16 13:22:03,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:22:03,996 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting kvaser_usb_remove_interfacesErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:22:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:22:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -774735751, now seen corresponding path program 1 times [2022-10-16 13:22:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:22:03,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582688138] [2022-10-16 13:22:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:22:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:22:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:22:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:22:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:22:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-16 13:22:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-16 13:22:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 13:22:04,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:22:04,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582688138] [2022-10-16 13:22:04,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582688138] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:22:04,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:22:04,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:22:04,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938223753] [2022-10-16 13:22:04,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:22:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:22:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:22:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:22:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:22:04,359 INFO L87 Difference]: Start difference. First operand 16181 states and 21315 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:22:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:10,370 INFO L93 Difference]: Finished difference Result 41449 states and 56559 transitions. [2022-10-16 13:22:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:22:10,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 101 [2022-10-16 13:22:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:10,439 INFO L225 Difference]: With dead ends: 41449 [2022-10-16 13:22:10,440 INFO L226 Difference]: Without dead ends: 25314 [2022-10-16 13:22:10,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:22:10,471 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 1036 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 5131 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:10,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 5131 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 1880 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-16 13:22:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25314 states. [2022-10-16 13:22:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25314 to 16181. [2022-10-16 13:22:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16181 states, 12570 states have (on average 1.332140015910899) internal successors, (16745), 12722 states have internal predecessors, (16745), 2271 states have call successors, (2271), 1305 states have call predecessors, (2271), 1305 states have return successors, (2271), 2267 states have call predecessors, (2271), 2271 states have call successors, (2271) [2022-10-16 13:22:12,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16181 states to 16181 states and 21287 transitions. [2022-10-16 13:22:12,229 INFO L78 Accepts]: Start accepts. Automaton has 16181 states and 21287 transitions. Word has length 101 [2022-10-16 13:22:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:22:12,230 INFO L495 AbstractCegarLoop]: Abstraction has 16181 states and 21287 transitions. [2022-10-16 13:22:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:22:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 16181 states and 21287 transitions. [2022-10-16 13:22:12,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-10-16 13:22:12,233 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:22:12,233 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:22:12,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-16 13:22:12,233 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:22:12,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:22:12,234 INFO L85 PathProgramCache]: Analyzing trace with hash -900661176, now seen corresponding path program 1 times [2022-10-16 13:22:12,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:22:12,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087479639] [2022-10-16 13:22:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:12,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:22:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:12,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:22:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:22:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:22:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:22:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:22:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:22:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:22:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:22:13,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:22:13,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087479639] [2022-10-16 13:22:13,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087479639] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:22:13,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:22:13,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:22:13,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338078230] [2022-10-16 13:22:13,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:22:13,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:22:13,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:22:13,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:22:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:22:13,097 INFO L87 Difference]: Start difference. First operand 16181 states and 21287 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 13:22:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:18,500 INFO L93 Difference]: Finished difference Result 41547 states and 56760 transitions. [2022-10-16 13:22:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:22:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 104 [2022-10-16 13:22:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:18,590 INFO L225 Difference]: With dead ends: 41547 [2022-10-16 13:22:18,590 INFO L226 Difference]: Without dead ends: 25412 [2022-10-16 13:22:18,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:22:18,627 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 551 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 5540 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:18,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 5540 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-16 13:22:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25412 states. [2022-10-16 13:22:20,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25412 to 16103. [2022-10-16 13:22:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16103 states, 12518 states have (on average 1.3314427224796292) internal successors, (16667), 12670 states have internal predecessors, (16667), 2245 states have call successors, (2245), 1305 states have call predecessors, (2245), 1305 states have return successors, (2245), 2241 states have call predecessors, (2245), 2245 states have call successors, (2245) [2022-10-16 13:22:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 21157 transitions. [2022-10-16 13:22:20,419 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 21157 transitions. Word has length 104 [2022-10-16 13:22:20,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:22:20,419 INFO L495 AbstractCegarLoop]: Abstraction has 16103 states and 21157 transitions. [2022-10-16 13:22:20,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-10-16 13:22:20,419 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 21157 transitions. [2022-10-16 13:22:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 13:22:20,422 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:22:20,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:22:20,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 13:22:20,422 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:22:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:22:20,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1543781093, now seen corresponding path program 1 times [2022-10-16 13:22:20,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:22:20,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576275939] [2022-10-16 13:22:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:20,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:22:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:22:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:22:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:22:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:22:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:22:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 13:22:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-16 13:22:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-16 13:22:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:22:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:22:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 13:22:20,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:22:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576275939] [2022-10-16 13:22:20,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576275939] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:22:20,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:22:20,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:22:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024876487] [2022-10-16 13:22:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:22:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:22:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:22:20,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:22:20,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:22:20,782 INFO L87 Difference]: Start difference. First operand 16103 states and 21157 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 13:22:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:25,507 INFO L93 Difference]: Finished difference Result 40206 states and 54807 transitions. [2022-10-16 13:22:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:22:25,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-10-16 13:22:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:25,567 INFO L225 Difference]: With dead ends: 40206 [2022-10-16 13:22:25,568 INFO L226 Difference]: Without dead ends: 24149 [2022-10-16 13:22:25,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:22:25,601 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 920 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:25,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2999 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-16 13:22:25,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24149 states. [2022-10-16 13:22:27,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24149 to 17251. [2022-10-16 13:22:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17251 states, 13386 states have (on average 1.3308680711190797) internal successors, (17815), 13538 states have internal predecessors, (17815), 2525 states have call successors, (2525), 1305 states have call predecessors, (2525), 1305 states have return successors, (2525), 2521 states have call predecessors, (2525), 2525 states have call successors, (2525) [2022-10-16 13:22:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17251 states to 17251 states and 22865 transitions. [2022-10-16 13:22:27,502 INFO L78 Accepts]: Start accepts. Automaton has 17251 states and 22865 transitions. Word has length 115 [2022-10-16 13:22:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:22:27,503 INFO L495 AbstractCegarLoop]: Abstraction has 17251 states and 22865 transitions. [2022-10-16 13:22:27,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 13:22:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 17251 states and 22865 transitions. [2022-10-16 13:22:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 13:22:27,507 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:22:27,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:22:27,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-16 13:22:27,507 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:22:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:22:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash 130026149, now seen corresponding path program 1 times [2022-10-16 13:22:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:22:27,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459698604] [2022-10-16 13:22:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:22:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:22:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:22:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:22:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:22:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:22:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 13:22:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-16 13:22:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-16 13:22:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:22:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:22:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 13:22:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:22:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459698604] [2022-10-16 13:22:28,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459698604] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:22:28,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236418639] [2022-10-16 13:22:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:28,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:22:28,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:22:28,640 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:22:28,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 13:22:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:29,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2254 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-16 13:22:29,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:22:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:22:29,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:22:29,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236418639] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:22:29,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:22:29,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 11 [2022-10-16 13:22:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515004111] [2022-10-16 13:22:29,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:22:29,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:22:29,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:22:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:22:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:22:29,207 INFO L87 Difference]: Start difference. First operand 17251 states and 22865 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 13:22:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:31,608 INFO L93 Difference]: Finished difference Result 36701 states and 49030 transitions. [2022-10-16 13:22:31,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:22:31,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 115 [2022-10-16 13:22:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:31,657 INFO L225 Difference]: With dead ends: 36701 [2022-10-16 13:22:31,658 INFO L226 Difference]: Without dead ends: 19496 [2022-10-16 13:22:31,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-10-16 13:22:31,688 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 747 mSDsluCounter, 4778 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 5885 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:31,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 5885 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 13:22:31,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19496 states. [2022-10-16 13:22:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19496 to 17419. [2022-10-16 13:22:33,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17419 states, 13526 states have (on average 1.3274434422593524) internal successors, (17955), 13678 states have internal predecessors, (17955), 2525 states have call successors, (2525), 1305 states have call predecessors, (2525), 1333 states have return successors, (2652), 2549 states have call predecessors, (2652), 2525 states have call successors, (2652) [2022-10-16 13:22:33,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17419 states to 17419 states and 23132 transitions. [2022-10-16 13:22:33,568 INFO L78 Accepts]: Start accepts. Automaton has 17419 states and 23132 transitions. Word has length 115 [2022-10-16 13:22:33,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:22:33,568 INFO L495 AbstractCegarLoop]: Abstraction has 17419 states and 23132 transitions. [2022-10-16 13:22:33,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-16 13:22:33,568 INFO L276 IsEmpty]: Start isEmpty. Operand 17419 states and 23132 transitions. [2022-10-16 13:22:33,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-16 13:22:33,571 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:22:33,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:22:33,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 13:22:33,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-16 13:22:33,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:22:33,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:22:33,778 INFO L85 PathProgramCache]: Analyzing trace with hash 497175008, now seen corresponding path program 1 times [2022-10-16 13:22:33,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:22:33,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665022407] [2022-10-16 13:22:33,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:33,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:22:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:22:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:22:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:22:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:22:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:22:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-16 13:22:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:22:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-10-16 13:22:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-16 13:22:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:34,634 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-16 13:22:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:22:34,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665022407] [2022-10-16 13:22:34,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665022407] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:22:34,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132214873] [2022-10-16 13:22:34,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:34,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:22:34,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:22:34,636 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:22:34,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 13:22:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:35,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 13:22:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:22:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:22:35,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:22:35,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132214873] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:22:35,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:22:35,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 10 [2022-10-16 13:22:35,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869297044] [2022-10-16 13:22:35,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:22:35,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:22:35,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:22:35,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:22:35,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:22:35,122 INFO L87 Difference]: Start difference. First operand 17419 states and 23132 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:22:39,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:39,046 INFO L93 Difference]: Finished difference Result 52476 states and 72897 transitions. [2022-10-16 13:22:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:22:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2022-10-16 13:22:39,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:39,143 INFO L225 Difference]: With dead ends: 52476 [2022-10-16 13:22:39,144 INFO L226 Difference]: Without dead ends: 35103 [2022-10-16 13:22:39,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-10-16 13:22:39,173 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1059 mSDsluCounter, 7650 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 9021 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:39,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 9021 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 13:22:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35103 states. [2022-10-16 13:22:41,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35103 to 17513. [2022-10-16 13:22:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17513 states, 13599 states have (on average 1.3256857121847194) internal successors, (18028), 13746 states have internal predecessors, (18028), 2525 states have call successors, (2525), 1305 states have call predecessors, (2525), 1354 states have return successors, (2689), 2575 states have call predecessors, (2689), 2525 states have call successors, (2689) [2022-10-16 13:22:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17513 states to 17513 states and 23242 transitions. [2022-10-16 13:22:41,400 INFO L78 Accepts]: Start accepts. Automaton has 17513 states and 23242 transitions. Word has length 113 [2022-10-16 13:22:41,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:22:41,400 INFO L495 AbstractCegarLoop]: Abstraction has 17513 states and 23242 transitions. [2022-10-16 13:22:41,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-16 13:22:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 17513 states and 23242 transitions. [2022-10-16 13:22:41,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-10-16 13:22:41,403 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:22:41,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:22:41,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 13:22:41,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:22:41,606 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:22:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:22:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1658665494, now seen corresponding path program 1 times [2022-10-16 13:22:41,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:22:41,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604775342] [2022-10-16 13:22:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:41,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:22:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:22:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:22:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:22:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:22:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-16 13:22:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-16 13:22:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:22:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-10-16 13:22:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-16 13:22:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-16 13:22:42,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:22:42,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604775342] [2022-10-16 13:22:42,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604775342] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:22:42,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:22:42,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:22:42,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118993297] [2022-10-16 13:22:42,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:22:42,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:22:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:22:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:22:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:22:42,567 INFO L87 Difference]: Start difference. First operand 17513 states and 23242 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-10-16 13:22:51,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:51,196 INFO L93 Difference]: Finished difference Result 62399 states and 88718 transitions. [2022-10-16 13:22:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:22:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 119 [2022-10-16 13:22:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:51,291 INFO L225 Difference]: With dead ends: 62399 [2022-10-16 13:22:51,292 INFO L226 Difference]: Without dead ends: 44932 [2022-10-16 13:22:51,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:22:51,319 INFO L413 NwaCegarLoop]: 1822 mSDtfsCounter, 1244 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 6025 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:51,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 6025 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-16 13:22:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44932 states. [2022-10-16 13:22:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44932 to 17084. [2022-10-16 13:22:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17084 states, 13349 states have (on average 1.3278897295677579) internal successors, (17726), 13481 states have internal predecessors, (17726), 2408 states have call successors, (2408), 1245 states have call predecessors, (2408), 1294 states have return successors, (2572), 2458 states have call predecessors, (2572), 2408 states have call successors, (2572) [2022-10-16 13:22:54,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17084 states to 17084 states and 22706 transitions. [2022-10-16 13:22:54,172 INFO L78 Accepts]: Start accepts. Automaton has 17084 states and 22706 transitions. Word has length 119 [2022-10-16 13:22:54,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:22:54,173 INFO L495 AbstractCegarLoop]: Abstraction has 17084 states and 22706 transitions. [2022-10-16 13:22:54,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-10-16 13:22:54,174 INFO L276 IsEmpty]: Start isEmpty. Operand 17084 states and 22706 transitions. [2022-10-16 13:22:54,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-10-16 13:22:54,177 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:22:54,177 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:22:54,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-10-16 13:22:54,178 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:22:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:22:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1724746661, now seen corresponding path program 1 times [2022-10-16 13:22:54,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:22:54,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682386357] [2022-10-16 13:22:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:22:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:22:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:22:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:22:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:22:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:22:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:22:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 13:22:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:54,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 13:22:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 13:22:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:55,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-16 13:22:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:22:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:22:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:22:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-10-16 13:22:55,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:22:55,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682386357] [2022-10-16 13:22:55,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682386357] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:22:55,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:22:55,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-16 13:22:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373379582] [2022-10-16 13:22:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:22:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 13:22:55,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:22:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 13:22:55,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:22:55,066 INFO L87 Difference]: Start difference. First operand 17084 states and 22706 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 13:22:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:22:59,605 INFO L93 Difference]: Finished difference Result 35254 states and 47304 transitions. [2022-10-16 13:22:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 13:22:59,606 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-10-16 13:22:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:22:59,662 INFO L225 Difference]: With dead ends: 35254 [2022-10-16 13:22:59,662 INFO L226 Difference]: Without dead ends: 18216 [2022-10-16 13:22:59,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-10-16 13:22:59,687 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 624 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:22:59,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 2999 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-16 13:22:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18216 states. [2022-10-16 13:23:01,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18216 to 16603. [2022-10-16 13:23:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16603 states, 13073 states have (on average 1.330222596190622) internal successors, (17390), 13205 states have internal predecessors, (17390), 2258 states have call successors, (2258), 1190 states have call predecessors, (2258), 1239 states have return successors, (2422), 2308 states have call predecessors, (2422), 2258 states have call successors, (2422) [2022-10-16 13:23:01,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16603 states to 16603 states and 22070 transitions. [2022-10-16 13:23:01,876 INFO L78 Accepts]: Start accepts. Automaton has 16603 states and 22070 transitions. Word has length 121 [2022-10-16 13:23:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:01,876 INFO L495 AbstractCegarLoop]: Abstraction has 16603 states and 22070 transitions. [2022-10-16 13:23:01,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-10-16 13:23:01,877 INFO L276 IsEmpty]: Start isEmpty. Operand 16603 states and 22070 transitions. [2022-10-16 13:23:01,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-10-16 13:23:01,880 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:01,880 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:01,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-10-16 13:23:01,881 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 17050585, now seen corresponding path program 1 times [2022-10-16 13:23:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:01,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341337655] [2022-10-16 13:23:01,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:02,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:23:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 13:23:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 13:23:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 13:23:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-16 13:23:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 13:23:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-10-16 13:23:02,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:02,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341337655] [2022-10-16 13:23:02,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341337655] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:02,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:23:02,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:23:02,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834705593] [2022-10-16 13:23:02,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:02,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:23:02,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:02,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:23:02,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:23:02,474 INFO L87 Difference]: Start difference. First operand 16603 states and 22070 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-16 13:23:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:08,914 INFO L93 Difference]: Finished difference Result 23048 states and 31802 transitions. [2022-10-16 13:23:08,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:23:08,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 148 [2022-10-16 13:23:08,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:08,992 INFO L225 Difference]: With dead ends: 23048 [2022-10-16 13:23:08,993 INFO L226 Difference]: Without dead ends: 23047 [2022-10-16 13:23:09,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:23:09,004 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 513 mSDsluCounter, 2831 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:09,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 3922 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-10-16 13:23:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23047 states. [2022-10-16 13:23:11,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23047 to 16602. [2022-10-16 13:23:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16602 states, 13073 states have (on average 1.3280807771743288) internal successors, (17362), 13204 states have internal predecessors, (17362), 2258 states have call successors, (2258), 1190 states have call predecessors, (2258), 1239 states have return successors, (2422), 2308 states have call predecessors, (2422), 2258 states have call successors, (2422) [2022-10-16 13:23:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16602 states to 16602 states and 22042 transitions. [2022-10-16 13:23:11,491 INFO L78 Accepts]: Start accepts. Automaton has 16602 states and 22042 transitions. Word has length 148 [2022-10-16 13:23:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:11,491 INFO L495 AbstractCegarLoop]: Abstraction has 16602 states and 22042 transitions. [2022-10-16 13:23:11,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-10-16 13:23:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 16602 states and 22042 transitions. [2022-10-16 13:23:11,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-10-16 13:23:11,495 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:11,495 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:11,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-10-16 13:23:11,495 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash 528568663, now seen corresponding path program 1 times [2022-10-16 13:23:11,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:11,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745478155] [2022-10-16 13:23:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:11,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:23:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 13:23:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 13:23:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 13:23:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-16 13:23:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 13:23:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:11,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 13:23:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:11,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745478155] [2022-10-16 13:23:11,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745478155] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:23:11,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040966617] [2022-10-16 13:23:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:11,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:23:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:23:11,922 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:23:11,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 13:23:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:12,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2317 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:23:12,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:23:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-10-16 13:23:12,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:23:12,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040966617] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:12,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:23:12,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-16 13:23:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756603611] [2022-10-16 13:23:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:12,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:23:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:23:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:23:12,499 INFO L87 Difference]: Start difference. First operand 16602 states and 22042 transitions. Second operand has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-16 13:23:15,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:15,651 INFO L93 Difference]: Finished difference Result 23341 states and 32091 transitions. [2022-10-16 13:23:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:23:15,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 149 [2022-10-16 13:23:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:15,715 INFO L225 Difference]: With dead ends: 23341 [2022-10-16 13:23:15,715 INFO L226 Difference]: Without dead ends: 23339 [2022-10-16 13:23:15,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:23:15,726 INFO L413 NwaCegarLoop]: 1211 mSDtfsCounter, 595 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:15,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 2967 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:23:15,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23339 states. [2022-10-16 13:23:18,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23339 to 16460. [2022-10-16 13:23:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16460 states, 12961 states have (on average 1.326595170125762) internal successors, (17194), 13090 states have internal predecessors, (17194), 2230 states have call successors, (2230), 1190 states have call predecessors, (2230), 1239 states have return successors, (2394), 2280 states have call predecessors, (2394), 2230 states have call successors, (2394) [2022-10-16 13:23:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16460 states to 16460 states and 21818 transitions. [2022-10-16 13:23:18,095 INFO L78 Accepts]: Start accepts. Automaton has 16460 states and 21818 transitions. Word has length 149 [2022-10-16 13:23:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:18,095 INFO L495 AbstractCegarLoop]: Abstraction has 16460 states and 21818 transitions. [2022-10-16 13:23:18,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 3 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-10-16 13:23:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 16460 states and 21818 transitions. [2022-10-16 13:23:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-16 13:23:18,099 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:18,100 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:18,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 13:23:18,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 13:23:18,304 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:18,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:18,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1639037679, now seen corresponding path program 1 times [2022-10-16 13:23:18,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:18,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358872133] [2022-10-16 13:23:18,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:18,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:23:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-16 13:23:18,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:18,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358872133] [2022-10-16 13:23:18,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358872133] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:18,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:23:18,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:23:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125091491] [2022-10-16 13:23:18,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:23:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:23:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:23:18,592 INFO L87 Difference]: Start difference. First operand 16460 states and 21818 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:23:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:21,591 INFO L93 Difference]: Finished difference Result 25863 states and 34278 transitions. [2022-10-16 13:23:21,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:23:21,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 124 [2022-10-16 13:23:21,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:21,621 INFO L225 Difference]: With dead ends: 25863 [2022-10-16 13:23:21,621 INFO L226 Difference]: Without dead ends: 9449 [2022-10-16 13:23:21,652 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 [2022-10-16 13:23:21,653 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 751 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:21,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2091 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-10-16 13:23:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9449 states. [2022-10-16 13:23:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 8591. [2022-10-16 13:23:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8591 states, 6735 states have (on average 1.3146250927988121) internal successors, (8854), 6821 states have internal predecessors, (8854), 1174 states have call successors, (1174), 628 states have call predecessors, (1174), 653 states have return successors, (1258), 1198 states have call predecessors, (1258), 1174 states have call successors, (1258) [2022-10-16 13:23:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 11286 transitions. [2022-10-16 13:23:23,025 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 11286 transitions. Word has length 124 [2022-10-16 13:23:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:23,025 INFO L495 AbstractCegarLoop]: Abstraction has 8591 states and 11286 transitions. [2022-10-16 13:23:23,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-10-16 13:23:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 11286 transitions. [2022-10-16 13:23:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-10-16 13:23:23,028 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:23,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-10-16 13:23:23,028 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:23,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1705276368, now seen corresponding path program 1 times [2022-10-16 13:23:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:23,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058721356] [2022-10-16 13:23:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:23:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-16 13:23:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:23:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:23:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 13:23:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-10-16 13:23:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 13:23:23,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:23,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058721356] [2022-10-16 13:23:23,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058721356] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:23,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:23:23,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-16 13:23:23,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498650017] [2022-10-16 13:23:23,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:23,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 13:23:23,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:23,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 13:23:23,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:23:23,751 INFO L87 Difference]: Start difference. First operand 8591 states and 11286 transitions. Second operand has 10 states, 9 states have (on average 9.0) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-16 13:23:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:27,700 INFO L93 Difference]: Finished difference Result 17977 states and 23739 transitions. [2022-10-16 13:23:27,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 13:23:27,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2022-10-16 13:23:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:27,722 INFO L225 Difference]: With dead ends: 17977 [2022-10-16 13:23:27,722 INFO L226 Difference]: Without dead ends: 9432 [2022-10-16 13:23:27,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-10-16 13:23:27,736 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 195 mSDsluCounter, 4031 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 4779 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:27,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 4779 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-10-16 13:23:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9432 states. [2022-10-16 13:23:28,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9432 to 8612. [2022-10-16 13:23:28,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8612 states, 6749 states have (on average 1.313972440361535) internal successors, (8868), 6828 states have internal predecessors, (8868), 1181 states have call successors, (1181), 628 states have call predecessors, (1181), 653 states have return successors, (1265), 1205 states have call predecessors, (1265), 1181 states have call successors, (1265) [2022-10-16 13:23:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8612 states to 8612 states and 11314 transitions. [2022-10-16 13:23:28,957 INFO L78 Accepts]: Start accepts. Automaton has 8612 states and 11314 transitions. Word has length 136 [2022-10-16 13:23:28,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:28,957 INFO L495 AbstractCegarLoop]: Abstraction has 8612 states and 11314 transitions. [2022-10-16 13:23:28,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-10-16 13:23:28,958 INFO L276 IsEmpty]: Start isEmpty. Operand 8612 states and 11314 transitions. [2022-10-16 13:23:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-10-16 13:23:28,962 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:28,962 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-10-16 13:23:28,962 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1751171364, now seen corresponding path program 1 times [2022-10-16 13:23:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:28,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594690624] [2022-10-16 13:23:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:23:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-10-16 13:23:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:23:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-16 13:23:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-16 13:23:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-16 13:23:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-16 13:23:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:29,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594690624] [2022-10-16 13:23:29,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594690624] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:29,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:23:29,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:23:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753081263] [2022-10-16 13:23:29,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:29,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:23:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:23:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:23:29,668 INFO L87 Difference]: Start difference. First operand 8612 states and 11314 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:23:33,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:33,185 INFO L93 Difference]: Finished difference Result 22184 states and 30122 transitions. [2022-10-16 13:23:33,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:23:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 137 [2022-10-16 13:23:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:33,218 INFO L225 Difference]: With dead ends: 22184 [2022-10-16 13:23:33,218 INFO L226 Difference]: Without dead ends: 13618 [2022-10-16 13:23:33,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:23:33,234 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 662 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 4370 SdHoareTripleChecker+Invalid, 1318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:33,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 4370 Invalid, 1318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 13:23:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13618 states. [2022-10-16 13:23:34,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13618 to 8523. [2022-10-16 13:23:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8523 states, 6699 states have (on average 1.3152709359605912) internal successors, (8811), 6778 states have internal predecessors, (8811), 1153 states have call successors, (1153), 617 states have call predecessors, (1153), 642 states have return successors, (1237), 1177 states have call predecessors, (1237), 1153 states have call successors, (1237) [2022-10-16 13:23:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 11201 transitions. [2022-10-16 13:23:34,554 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 11201 transitions. Word has length 137 [2022-10-16 13:23:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:34,555 INFO L495 AbstractCegarLoop]: Abstraction has 8523 states and 11201 transitions. [2022-10-16 13:23:34,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:23:34,555 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 11201 transitions. [2022-10-16 13:23:34,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-16 13:23:34,558 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:34,559 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-10-16 13:23:34,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-10-16 13:23:34,559 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:34,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2016973394, now seen corresponding path program 1 times [2022-10-16 13:23:34,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:34,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907750130] [2022-10-16 13:23:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:34,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:34,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:34,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-10-16 13:23:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-10-16 13:23:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-10-16 13:23:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:34,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907750130] [2022-10-16 13:23:34,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907750130] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:34,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:23:34,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:23:34,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415774666] [2022-10-16 13:23:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:34,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:23:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:23:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:23:34,789 INFO L87 Difference]: Start difference. First operand 8523 states and 11201 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:23:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:36,994 INFO L93 Difference]: Finished difference Result 17664 states and 23333 transitions. [2022-10-16 13:23:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:23:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 134 [2022-10-16 13:23:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:37,016 INFO L225 Difference]: With dead ends: 17664 [2022-10-16 13:23:37,016 INFO L226 Difference]: Without dead ends: 9187 [2022-10-16 13:23:37,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:23:37,031 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 814 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:37,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1175 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 13:23:37,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9187 states. [2022-10-16 13:23:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9187 to 7188. [2022-10-16 13:23:38,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7188 states, 5614 states have (on average 1.3017456359102244) internal successors, (7308), 5686 states have internal predecessors, (7308), 990 states have call successors, (990), 533 states have call predecessors, (990), 555 states have return successors, (1062), 1015 states have call predecessors, (1062), 990 states have call successors, (1062) [2022-10-16 13:23:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7188 states to 7188 states and 9360 transitions. [2022-10-16 13:23:38,200 INFO L78 Accepts]: Start accepts. Automaton has 7188 states and 9360 transitions. Word has length 134 [2022-10-16 13:23:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:38,200 INFO L495 AbstractCegarLoop]: Abstraction has 7188 states and 9360 transitions. [2022-10-16 13:23:38,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:23:38,200 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states and 9360 transitions. [2022-10-16 13:23:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-10-16 13:23:38,203 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:38,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:38,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-10-16 13:23:38,203 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2106462152, now seen corresponding path program 1 times [2022-10-16 13:23:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:38,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554744703] [2022-10-16 13:23:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:23:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 13:23:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-10-16 13:23:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 13:23:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-16 13:23:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-10-16 13:23:38,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-10-16 13:23:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-10-16 13:23:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-16 13:23:38,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:38,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554744703] [2022-10-16 13:23:38,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554744703] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:23:38,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247840425] [2022-10-16 13:23:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:38,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:23:38,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:23:38,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:23:38,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 13:23:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:39,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:23:39,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:23:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 13:23:39,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:23:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-10-16 13:23:39,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247840425] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:23:39,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:23:39,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-10-16 13:23:39,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127414625] [2022-10-16 13:23:39,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:23:39,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 13:23:39,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:39,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 13:23:39,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:23:39,376 INFO L87 Difference]: Start difference. First operand 7188 states and 9360 transitions. Second operand has 10 states, 10 states have (on average 13.1) internal successors, (131), 6 states have internal predecessors, (131), 5 states have call successors, (36), 6 states have call predecessors, (36), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-10-16 13:23:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:44,603 INFO L93 Difference]: Finished difference Result 22525 states and 30877 transitions. [2022-10-16 13:23:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:23:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 6 states have internal predecessors, (131), 5 states have call successors, (36), 6 states have call predecessors, (36), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 167 [2022-10-16 13:23:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:44,642 INFO L225 Difference]: With dead ends: 22525 [2022-10-16 13:23:44,642 INFO L226 Difference]: Without dead ends: 15399 [2022-10-16 13:23:44,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:23:44,656 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 1976 mSDsluCounter, 2735 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 3910 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:44,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 3910 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-16 13:23:44,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2022-10-16 13:23:46,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 8090. [2022-10-16 13:23:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 6296 states have (on average 1.304002541296061) internal successors, (8210), 6368 states have internal predecessors, (8210), 1210 states have call successors, (1210), 533 states have call predecessors, (1210), 555 states have return successors, (1304), 1235 states have call predecessors, (1304), 1210 states have call successors, (1304) [2022-10-16 13:23:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 10724 transitions. [2022-10-16 13:23:46,099 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 10724 transitions. Word has length 167 [2022-10-16 13:23:46,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:46,099 INFO L495 AbstractCegarLoop]: Abstraction has 8090 states and 10724 transitions. [2022-10-16 13:23:46,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.1) internal successors, (131), 6 states have internal predecessors, (131), 5 states have call successors, (36), 6 states have call predecessors, (36), 2 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2022-10-16 13:23:46,100 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 10724 transitions. [2022-10-16 13:23:46,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-10-16 13:23:46,103 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:46,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:46,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 13:23:46,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-10-16 13:23:46,318 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:46,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 779353808, now seen corresponding path program 1 times [2022-10-16 13:23:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:46,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771382149] [2022-10-16 13:23:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:46,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:46,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:23:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 13:23:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-16 13:23:46,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-16 13:23:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 13:23:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-10-16 13:23:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-16 13:23:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:46,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771382149] [2022-10-16 13:23:46,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771382149] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:23:46,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688366601] [2022-10-16 13:23:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:46,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:23:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:23:46,751 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:23:46,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 13:23:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:47,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:23:47,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:23:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-16 13:23:47,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:23:47,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688366601] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:47,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:23:47,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2022-10-16 13:23:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366775089] [2022-10-16 13:23:47,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:47,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:23:47,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:47,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:23:47,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:23:47,315 INFO L87 Difference]: Start difference. First operand 8090 states and 10724 transitions. Second operand has 3 states, 2 states have (on average 45.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:23:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:49,480 INFO L93 Difference]: Finished difference Result 12523 states and 17280 transitions. [2022-10-16 13:23:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:23:49,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 45.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 150 [2022-10-16 13:23:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:49,510 INFO L225 Difference]: With dead ends: 12523 [2022-10-16 13:23:49,510 INFO L226 Difference]: Without dead ends: 12522 [2022-10-16 13:23:49,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:23:49,516 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 304 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:49,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1949 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 13:23:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12522 states. [2022-10-16 13:23:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12522 to 8118. [2022-10-16 13:23:50,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6324 states have (on average 1.3048703352308666) internal successors, (8252), 6396 states have internal predecessors, (8252), 1210 states have call successors, (1210), 533 states have call predecessors, (1210), 555 states have return successors, (1304), 1235 states have call predecessors, (1304), 1210 states have call successors, (1304) [2022-10-16 13:23:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 10766 transitions. [2022-10-16 13:23:50,979 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 10766 transitions. Word has length 150 [2022-10-16 13:23:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:50,979 INFO L495 AbstractCegarLoop]: Abstraction has 8118 states and 10766 transitions. [2022-10-16 13:23:50,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 45.0) internal successors, (90), 3 states have internal predecessors, (90), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-10-16 13:23:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 10766 transitions. [2022-10-16 13:23:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-10-16 13:23:50,982 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:50,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:51,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 13:23:51,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-10-16 13:23:51,183 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:51,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1607040288, now seen corresponding path program 1 times [2022-10-16 13:23:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:51,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311857074] [2022-10-16 13:23:51,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:51,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:23:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 13:23:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-10-16 13:23:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-10-16 13:23:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-10-16 13:23:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-10-16 13:23:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-16 13:23:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:51,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311857074] [2022-10-16 13:23:51,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311857074] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:23:51,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123581386] [2022-10-16 13:23:51,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:51,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:23:51,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:23:51,596 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:23:51,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 13:23:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:52,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2275 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:23:52,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:23:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-10-16 13:23:52,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:23:52,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123581386] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:52,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:23:52,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-10-16 13:23:52,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680870578] [2022-10-16 13:23:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:52,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:23:52,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:52,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:23:52,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:23:52,217 INFO L87 Difference]: Start difference. First operand 8118 states and 10766 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-16 13:23:54,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:23:54,515 INFO L93 Difference]: Finished difference Result 20375 states and 27650 transitions. [2022-10-16 13:23:54,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:23:54,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 151 [2022-10-16 13:23:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:23:54,542 INFO L225 Difference]: With dead ends: 20375 [2022-10-16 13:23:54,542 INFO L226 Difference]: Without dead ends: 12319 [2022-10-16 13:23:54,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:23:54,555 INFO L413 NwaCegarLoop]: 1138 mSDtfsCounter, 558 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:23:54,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 2760 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:23:54,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12319 states. [2022-10-16 13:23:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12319 to 8132. [2022-10-16 13:23:55,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8132 states, 6338 states have (on average 1.3041969075418114) internal successors, (8266), 6410 states have internal predecessors, (8266), 1210 states have call successors, (1210), 533 states have call predecessors, (1210), 555 states have return successors, (1304), 1235 states have call predecessors, (1304), 1210 states have call successors, (1304) [2022-10-16 13:23:55,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8132 states to 8132 states and 10780 transitions. [2022-10-16 13:23:55,989 INFO L78 Accepts]: Start accepts. Automaton has 8132 states and 10780 transitions. Word has length 151 [2022-10-16 13:23:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:23:55,989 INFO L495 AbstractCegarLoop]: Abstraction has 8132 states and 10780 transitions. [2022-10-16 13:23:55,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-10-16 13:23:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8132 states and 10780 transitions. [2022-10-16 13:23:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-10-16 13:23:55,993 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:23:55,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 13:23:56,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 13:23:56,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-10-16 13:23:56,207 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [kvaser_usb_wait_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, kvaser_usb_wait_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2022-10-16 13:23:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:23:56,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1907789882, now seen corresponding path program 1 times [2022-10-16 13:23:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:23:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579634618] [2022-10-16 13:23:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:56,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:23:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:23:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:23:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:23:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:23:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:23:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-10-16 13:23:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 13:23:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-10-16 13:23:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-16 13:23:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-10-16 13:23:57,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-10-16 13:23:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:23:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:23:57,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-10-16 13:23:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,265 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-10-16 13:23:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:23:57,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579634618] [2022-10-16 13:23:57,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579634618] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:23:57,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192270252] [2022-10-16 13:23:57,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:23:57,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:23:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:23:57,266 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:23:57,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 13:23:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:23:57,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 13:23:57,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:23:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-16 13:23:57,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:23:57,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192270252] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:23:57,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:23:57,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-10-16 13:23:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619139967] [2022-10-16 13:23:57,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:23:57,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:23:57,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:23:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:23:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-10-16 13:23:57,906 INFO L87 Difference]: Start difference. First operand 8132 states and 10780 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15)