/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 [2022-10-15 21:18:03,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:18:03,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:18:03,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:18:03,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:18:03,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:18:03,487 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:18:03,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:18:03,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:18:03,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:18:03,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:18:03,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:18:03,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:18:03,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:18:03,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:18:03,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:18:03,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:18:03,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:18:03,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:18:03,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:18:03,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:18:03,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:18:03,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:18:03,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:18:03,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:18:03,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:18:03,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:18:03,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:18:03,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:18:03,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:18:03,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:18:03,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:18:03,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:18:03,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:18:03,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:18:03,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:18:03,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:18:03,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:18:03,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:18:03,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:18:03,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:18:03,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:18:03,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:18:03,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:18:03,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:18:03,612 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:18:03,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:18:03,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:18:03,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:18:03,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:18:03,615 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:18:03,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:18:03,615 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:18:03,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:18:03,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:18:03,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:18:03,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:18:03,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:18:03,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:18:03,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:18:03,617 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:18:03,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:18:03,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:18:03,618 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:18:03,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:18:03,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:18:03,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:18:03,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:18:03,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:18:03,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:18:03,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:18:03,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:18:03,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:18:03,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:18:03,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:18:03,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:18:04,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:18:04,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:18:04,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:18:04,054 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:18:04,054 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:18:04,056 INFO L432 ainManager$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 [2022-10-15 21:18:04,144 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211fc6aba/5d867b7058b44dc69add84b7112d4e6a/FLAGe7a49ae94 [2022-10-15 21:18:05,425 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:18:05,426 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 [2022-10-15 21:18:05,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211fc6aba/5d867b7058b44dc69add84b7112d4e6a/FLAGe7a49ae94 [2022-10-15 21:18:05,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/211fc6aba/5d867b7058b44dc69add84b7112d4e6a [2022-10-15 21:18:05,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:18:05,732 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:18:05,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:18:05,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:18:05,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:18:05,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:18:05" (1/1) ... [2022-10-15 21:18:05,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61475898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:05, skipping insertion in model container [2022-10-15 21:18:05,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:18:05" (1/1) ... [2022-10-15 21:18:05,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:18:05,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:18:06,540 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5632] [2022-10-15 21:18:06,540 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] [2022-10-15 21:18:06,859 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] [2022-10-15 21:18:07,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:18:07,903 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:18:08,070 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5632] [2022-10-15 21:18:08,070 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] [2022-10-15 21:18:08,086 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] [2022-10-15 21:18:08,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:18:08,625 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:18:08,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08 WrapperNode [2022-10-15 21:18:08,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:18:08,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:18:08,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:18:08,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:18:08,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:08,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:08,866 INFO L138 Inliner]: procedures = 205, calls = 1464, calls flagged for inlining = 88, calls inlined = 65, statements flattened = 2179 [2022-10-15 21:18:08,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:18:08,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:18:08,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:18:08,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:18:08,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:08,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:08,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:08,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:08,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:09,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:09,033 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:09,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:09,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:18:09,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:18:09,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:18:09,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:18:09,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (1/1) ... [2022-10-15 21:18:09,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:18:09,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:18:09,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:18:09,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:18:09,187 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-15 21:18:09,187 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-15 21:18:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-15 21:18:09,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-15 21:18:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:18:09,188 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:18:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:18:09,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:18:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:18:09,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:18:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2022-10-15 21:18:09,189 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2022-10-15 21:18:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:18:09,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:18:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-10-15 21:18:09,190 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-10-15 21:18:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:18:09,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:18:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_send_msg [2022-10-15 21:18:09,190 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_send_msg [2022-10-15 21:18:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:18:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:18:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-15 21:18:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-15 21:18:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:18:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_send_simple_msg [2022-10-15 21:18:09,191 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_send_simple_msg [2022-10-15 21:18:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-15 21:18:09,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-15 21:18:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:18:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-15 21:18:09,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-15 21:18:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:18:09,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:18:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-15 21:18:09,193 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-15 21:18:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-15 21:18:09,193 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-15 21:18:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_unlink_tx_urbs [2022-10-15 21:18:09,193 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_unlink_tx_urbs [2022-10-15 21:18:09,193 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-15 21:18:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-15 21:18:09,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-15 21:18:09,194 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-15 21:18:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:18:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:18:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-15 21:18:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-15 21:18:09,195 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-15 21:18:09,195 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-15 21:18:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:18:09,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:18:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:18:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:18:09,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:18:09,196 INFO L130 BoogieDeclarations]: Found specification of procedure can_change_mtu [2022-10-15 21:18:09,196 INFO L138 BoogieDeclarations]: Found implementation of procedure can_change_mtu [2022-10-15 21:18:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:18:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-10-15 21:18:09,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-10-15 21:18:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:18:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-10-15 21:18:09,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-10-15 21:18:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_remove_interfaces [2022-10-15 21:18:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_remove_interfaces [2022-10-15 21:18:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:18:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:18:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:18:09,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:18:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-15 21:18:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-15 21:18:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-15 21:18:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-15 21:18:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:18:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:18:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-15 21:18:09,199 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-15 21:18:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-10-15 21:18:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-10-15 21:18:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:18:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:18:09,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:18:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:18:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:18:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure kvaser_usb_wait_msg [2022-10-15 21:18:09,201 INFO L138 BoogieDeclarations]: Found implementation of procedure kvaser_usb_wait_msg [2022-10-15 21:18:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:18:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-15 21:18:09,201 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-15 21:18:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-15 21:18:09,202 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-15 21:18:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-15 21:18:09,202 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-15 21:18:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-10-15 21:18:09,202 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-10-15 21:18:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-15 21:18:09,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-15 21:18:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:18:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-15 21:18:09,203 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-15 21:18:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:18:09,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:18:09,724 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:18:09,728 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:18:09,982 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:18:12,294 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:18:12,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:18:12,311 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:18:12,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:18:12 BoogieIcfgContainer [2022-10-15 21:18:12,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:18:12,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:18:12,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:18:12,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:18:12,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:18:05" (1/3) ... [2022-10-15 21:18:12,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e7952a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:18:12, skipping insertion in model container [2022-10-15 21:18:12,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:18:08" (2/3) ... [2022-10-15 21:18:12,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e7952a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:18:12, skipping insertion in model container [2022-10-15 21:18:12,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:18:12" (3/3) ... [2022-10-15 21:18:12,327 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 [2022-10-15 21:18:12,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:18:12,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-10-15 21:18:12,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:18:12,452 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;@393e1180, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:18:12,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2022-10-15 21:18:12,462 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) [2022-10-15 21:18:12,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-15 21:18:12,478 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:12,479 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] [2022-10-15 21:18:12,479 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)] === [2022-10-15 21:18:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:12,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1183628375, now seen corresponding path program 1 times [2022-10-15 21:18:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:12,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611605981] [2022-10-15 21:18:12,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:12,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:13,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:18:13,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:13,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611605981] [2022-10-15 21:18:13,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611605981] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:13,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:13,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:13,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703423370] [2022-10-15 21:18:13,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:13,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:13,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:13,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:13,357 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) [2022-10-15 21:18:15,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:15,756 INFO L93 Difference]: Finished difference Result 1777 states and 2363 transitions. [2022-10-15 21:18:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:15,760 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 [2022-10-15 21:18:15,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:15,786 INFO L225 Difference]: With dead ends: 1777 [2022-10-15 21:18:15,786 INFO L226 Difference]: Without dead ends: 1087 [2022-10-15 21:18:15,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:15,806 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 689 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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 [2022-10-15 21:18:15,808 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] [2022-10-15 21:18:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-10-15 21:18:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 978. [2022-10-15 21:18:15,986 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) [2022-10-15 21:18:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1290 transitions. [2022-10-15 21:18:15,997 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1290 transitions. Word has length 29 [2022-10-15 21:18:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:16,000 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1290 transitions. [2022-10-15 21:18:16,000 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) [2022-10-15 21:18:16,001 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1290 transitions. [2022-10-15 21:18:16,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-15 21:18:16,006 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:16,007 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] [2022-10-15 21:18:16,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:18:16,007 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)] === [2022-10-15 21:18:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2117622376, now seen corresponding path program 1 times [2022-10-15 21:18:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:16,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515996620] [2022-10-15 21:18:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:16,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:16,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:18:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-15 21:18:16,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:16,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515996620] [2022-10-15 21:18:16,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515996620] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:16,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:16,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:18:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534989021] [2022-10-15 21:18:16,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:18:16,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:18:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:16,359 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) [2022-10-15 21:18:18,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:18,103 INFO L93 Difference]: Finished difference Result 2444 states and 3242 transitions. [2022-10-15 21:18:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:18:18,103 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 [2022-10-15 21:18:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:18,117 INFO L225 Difference]: With dead ends: 2444 [2022-10-15 21:18:18,117 INFO L226 Difference]: Without dead ends: 1473 [2022-10-15 21:18:18,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:18:18,124 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 783 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:18,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2427 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-15 21:18:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2022-10-15 21:18:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1359. [2022-10-15 21:18:18,224 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) [2022-10-15 21:18:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1801 transitions. [2022-10-15 21:18:18,235 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1801 transitions. Word has length 32 [2022-10-15 21:18:18,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:18,236 INFO L495 AbstractCegarLoop]: Abstraction has 1359 states and 1801 transitions. [2022-10-15 21:18:18,236 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) [2022-10-15 21:18:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1801 transitions. [2022-10-15 21:18:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-15 21:18:18,239 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:18,239 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] [2022-10-15 21:18:18,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:18:18,240 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)] === [2022-10-15 21:18:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:18,241 INFO L85 PathProgramCache]: Analyzing trace with hash -558343176, now seen corresponding path program 1 times [2022-10-15 21:18:18,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:18,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622231403] [2022-10-15 21:18:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:18,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:18,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:18,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-10-15 21:18:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:18:18,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:18,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622231403] [2022-10-15 21:18:18,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622231403] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:18,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:18,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:18:18,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471447184] [2022-10-15 21:18:18,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:18,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:18:18,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:18,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:18:18,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:18,533 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) [2022-10-15 21:18:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:20,186 INFO L93 Difference]: Finished difference Result 2799 states and 3739 transitions. [2022-10-15 21:18:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:20,186 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 [2022-10-15 21:18:20,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:20,209 INFO L225 Difference]: With dead ends: 2799 [2022-10-15 21:18:20,209 INFO L226 Difference]: Without dead ends: 1456 [2022-10-15 21:18:20,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:20,223 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 173 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:20,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 2248 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-15 21:18:20,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-10-15 21:18:20,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1353. [2022-10-15 21:18:20,309 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) [2022-10-15 21:18:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1793 transitions. [2022-10-15 21:18:20,319 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1793 transitions. Word has length 51 [2022-10-15 21:18:20,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:20,320 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1793 transitions. [2022-10-15 21:18:20,320 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) [2022-10-15 21:18:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1793 transitions. [2022-10-15 21:18:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-15 21:18:20,323 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:20,323 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] [2022-10-15 21:18:20,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:18:20,324 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)] === [2022-10-15 21:18:20,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash 840699274, now seen corresponding path program 1 times [2022-10-15 21:18:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:20,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23498205] [2022-10-15 21:18:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:20,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:20,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:18:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:18:20,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:20,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23498205] [2022-10-15 21:18:20,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23498205] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:20,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:20,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:18:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920087099] [2022-10-15 21:18:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:20,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:20,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:20,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:20,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:20,728 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) [2022-10-15 21:18:23,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:23,011 INFO L93 Difference]: Finished difference Result 2817 states and 3782 transitions. [2022-10-15 21:18:23,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:23,012 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 [2022-10-15 21:18:23,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:23,031 INFO L225 Difference]: With dead ends: 2817 [2022-10-15 21:18:23,031 INFO L226 Difference]: Without dead ends: 2813 [2022-10-15 21:18:23,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:23,038 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 989 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:23,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 2224 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-15 21:18:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-10-15 21:18:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2580. [2022-10-15 21:18:23,220 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) [2022-10-15 21:18:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3460 transitions. [2022-10-15 21:18:23,239 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3460 transitions. Word has length 55 [2022-10-15 21:18:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:23,240 INFO L495 AbstractCegarLoop]: Abstraction has 2580 states and 3460 transitions. [2022-10-15 21:18:23,240 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) [2022-10-15 21:18:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3460 transitions. [2022-10-15 21:18:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-15 21:18:23,242 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:23,242 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] [2022-10-15 21:18:23,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:18:23,243 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)] === [2022-10-15 21:18:23,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1068156697, now seen corresponding path program 1 times [2022-10-15 21:18:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:23,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312898537] [2022-10-15 21:18:23,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:23,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:18:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:18:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:18:23,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:23,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312898537] [2022-10-15 21:18:23,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312898537] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:23,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:23,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:23,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203920432] [2022-10-15 21:18:23,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:23,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:18:23,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:18:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:23,592 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) [2022-10-15 21:18:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:26,708 INFO L93 Difference]: Finished difference Result 4193 states and 5680 transitions. [2022-10-15 21:18:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:18:26,709 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 [2022-10-15 21:18:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:26,739 INFO L225 Difference]: With dead ends: 4193 [2022-10-15 21:18:26,739 INFO L226 Difference]: Without dead ends: 4185 [2022-10-15 21:18:26,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:18:26,743 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 1051 mSDsluCounter, 1706 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:26,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 2849 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-15 21:18:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2022-10-15 21:18:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 3873. [2022-10-15 21:18:26,984 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) [2022-10-15 21:18:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 5209 transitions. [2022-10-15 21:18:27,023 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 5209 transitions. Word has length 58 [2022-10-15 21:18:27,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:27,033 INFO L495 AbstractCegarLoop]: Abstraction has 3873 states and 5209 transitions. [2022-10-15 21:18:27,033 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) [2022-10-15 21:18:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 5209 transitions. [2022-10-15 21:18:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 21:18:27,037 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:27,037 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] [2022-10-15 21:18:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:18:27,038 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)] === [2022-10-15 21:18:27,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:27,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1950449773, now seen corresponding path program 1 times [2022-10-15 21:18:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:27,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693883097] [2022-10-15 21:18:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:18:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-15 21:18:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-10-15 21:18:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:18:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:27,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693883097] [2022-10-15 21:18:27,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693883097] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:27,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:27,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:18:27,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129914914] [2022-10-15 21:18:27,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:27,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:18:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:27,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:18:27,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:27,467 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) [2022-10-15 21:18:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:31,382 INFO L93 Difference]: Finished difference Result 8654 states and 11720 transitions. [2022-10-15 21:18:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:18:31,383 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 [2022-10-15 21:18:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:31,418 INFO L225 Difference]: With dead ends: 8654 [2022-10-15 21:18:31,419 INFO L226 Difference]: Without dead ends: 4799 [2022-10-15 21:18:31,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:18:31,435 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1145 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:31,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 2391 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-10-15 21:18:31,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-10-15 21:18:31,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4385. [2022-10-15 21:18:31,806 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) [2022-10-15 21:18:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 5885 transitions. [2022-10-15 21:18:31,830 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 5885 transitions. Word has length 66 [2022-10-15 21:18:31,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:31,831 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 5885 transitions. [2022-10-15 21:18:31,831 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) [2022-10-15 21:18:31,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 5885 transitions. [2022-10-15 21:18:31,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-15 21:18:31,833 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:31,834 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] [2022-10-15 21:18:31,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:18:31,834 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)] === [2022-10-15 21:18:31,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:31,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1661071643, now seen corresponding path program 1 times [2022-10-15 21:18:31,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:31,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000301522] [2022-10-15 21:18:31,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:31,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:18:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:18:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-15 21:18:32,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:32,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000301522] [2022-10-15 21:18:32,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000301522] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:32,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:32,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:32,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365128786] [2022-10-15 21:18:32,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:32,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:18:32,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:18:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:18:32,178 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) [2022-10-15 21:18:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:34,875 INFO L93 Difference]: Finished difference Result 7124 states and 10264 transitions. [2022-10-15 21:18:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:34,876 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 [2022-10-15 21:18:34,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:34,935 INFO L225 Difference]: With dead ends: 7124 [2022-10-15 21:18:34,935 INFO L226 Difference]: Without dead ends: 7122 [2022-10-15 21:18:34,941 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 [2022-10-15 21:18:34,944 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 553 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:34,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 2995 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-15 21:18:34,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2022-10-15 21:18:35,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 4547. [2022-10-15 21:18:35,337 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) [2022-10-15 21:18:35,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 6125 transitions. [2022-10-15 21:18:35,368 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 6125 transitions. Word has length 65 [2022-10-15 21:18:35,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:35,368 INFO L495 AbstractCegarLoop]: Abstraction has 4547 states and 6125 transitions. [2022-10-15 21:18:35,370 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) [2022-10-15 21:18:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 6125 transitions. [2022-10-15 21:18:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-15 21:18:35,373 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:35,373 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] [2022-10-15 21:18:35,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 21:18:35,374 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)] === [2022-10-15 21:18:35,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:35,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1699705100, now seen corresponding path program 1 times [2022-10-15 21:18:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:35,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175694111] [2022-10-15 21:18:35,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:35,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:35,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:35,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:35,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:18:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:18:35,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:35,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175694111] [2022-10-15 21:18:35,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175694111] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:35,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:18:35,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:18:35,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024035763] [2022-10-15 21:18:35,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:35,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:35,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:18:35,765 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) [2022-10-15 21:18:38,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:38,128 INFO L93 Difference]: Finished difference Result 11342 states and 15169 transitions. [2022-10-15 21:18:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:18:38,129 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 [2022-10-15 21:18:38,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:38,189 INFO L225 Difference]: With dead ends: 11342 [2022-10-15 21:18:38,189 INFO L226 Difference]: Without dead ends: 6828 [2022-10-15 21:18:38,204 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 [2022-10-15 21:18:38,205 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 [2022-10-15 21:18:38,207 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] [2022-10-15 21:18:38,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6828 states. [2022-10-15 21:18:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6828 to 6281. [2022-10-15 21:18:38,641 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) [2022-10-15 21:18:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 8261 transitions. [2022-10-15 21:18:38,667 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 8261 transitions. Word has length 72 [2022-10-15 21:18:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:38,669 INFO L495 AbstractCegarLoop]: Abstraction has 6281 states and 8261 transitions. [2022-10-15 21:18:38,669 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) [2022-10-15 21:18:38,669 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 8261 transitions. [2022-10-15 21:18:38,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-15 21:18:38,673 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:38,673 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] [2022-10-15 21:18:38,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 21:18:38,674 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)] === [2022-10-15 21:18:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1722609381, now seen corresponding path program 1 times [2022-10-15 21:18:38,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:38,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087083324] [2022-10-15 21:18:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:38,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:38,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:39,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:18:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:18:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:39,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087083324] [2022-10-15 21:18:39,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087083324] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:18:39,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643865615] [2022-10-15 21:18:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:39,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:18:39,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:18:39,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:18:39,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 21:18:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:39,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:18:39,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:18:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:18:39,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:18:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:18:39,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643865615] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:18:39,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:18:39,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-15 21:18:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160735946] [2022-10-15 21:18:39,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:18:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:18:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:18:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:18:39,819 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) [2022-10-15 21:18:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:45,931 INFO L93 Difference]: Finished difference Result 14397 states and 18978 transitions. [2022-10-15 21:18:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 21:18:45,932 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 [2022-10-15 21:18:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:45,992 INFO L225 Difference]: With dead ends: 14397 [2022-10-15 21:18:45,993 INFO L226 Difference]: Without dead ends: 14395 [2022-10-15 21:18:45,999 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 [2022-10-15 21:18:46,000 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 5610 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 1422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5961 SdHoareTripleChecker+Valid, 3772 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1422 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5961 Valid, 3772 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1422 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-10-15 21:18:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14395 states. [2022-10-15 21:18:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14395 to 10149. [2022-10-15 21:18:46,838 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) [2022-10-15 21:18:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10149 states to 10149 states and 13331 transitions. [2022-10-15 21:18:46,875 INFO L78 Accepts]: Start accepts. Automaton has 10149 states and 13331 transitions. Word has length 72 [2022-10-15 21:18:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:18:46,876 INFO L495 AbstractCegarLoop]: Abstraction has 10149 states and 13331 transitions. [2022-10-15 21:18:46,876 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) [2022-10-15 21:18:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 10149 states and 13331 transitions. [2022-10-15 21:18:46,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-15 21:18:46,888 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:18:46,888 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] [2022-10-15 21:18:46,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 21:18:47,100 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 [2022-10-15 21:18:47,101 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)] === [2022-10-15 21:18:47,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:18:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1861284544, now seen corresponding path program 1 times [2022-10-15 21:18:47,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:18:47,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976545373] [2022-10-15 21:18:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:47,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:18:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:18:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:18:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-15 21:18:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:18:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:47,456 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-15 21:18:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:18:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976545373] [2022-10-15 21:18:47,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976545373] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:18:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334466085] [2022-10-15 21:18:47,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:18:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:18:47,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:18:47,461 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:18:47,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 21:18:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:18:47,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:18:47,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:18:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 21:18:47,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:18:47,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334466085] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:18:47,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:18:47,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-15 21:18:47,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706755618] [2022-10-15 21:18:47,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:18:47,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:18:47,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:18:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:18:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:18:47,952 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) [2022-10-15 21:18:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:18:49,810 INFO L93 Difference]: Finished difference Result 27497 states and 36019 transitions. [2022-10-15 21:18:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:18:49,811 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 [2022-10-15 21:18:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:18:49,886 INFO L225 Difference]: With dead ends: 27497 [2022-10-15 21:18:49,887 INFO L226 Difference]: Without dead ends: 18730 [2022-10-15 21:18:49,917 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 [2022-10-15 21:18:49,918 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 1577 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:18:49,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 3105 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 21:18:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states.