/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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:33:49,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:33:49,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:33:49,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:33:49,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:33:49,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:33:49,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:33:49,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:33:49,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:33:49,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:33:49,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:33:49,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:33:49,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:33:49,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:33:49,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:33:49,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:33:49,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:33:49,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:33:49,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:33:49,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:33:49,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:33:49,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:33:49,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:33:49,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:33:49,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:33:49,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:33:49,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:33:49,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:33:49,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:33:49,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:33:49,698 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:33:49,699 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:33:49,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:33:49,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:33:49,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:33:49,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:33:49,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:33:49,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:33:49,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:33:49,706 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:33:49,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:33:49,708 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 21:33:49,766 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:33:49,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:33:49,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:33:49,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:33:49,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:33:49,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:33:49,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:33:49,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:33:49,772 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:33:49,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:33:49,773 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:33:49,774 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:33:49,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:33:49,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:33:49,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:33:49,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:33:49,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:33:49,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:33:49,775 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:33:49,775 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:33:49,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:33:49,775 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:33:49,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:33:49,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:33:49,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:33:49,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:33:49,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:33:49,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:33:49,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:33:49,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:33:49,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:33:49,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:33:49,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:33:49,778 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:33:50,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:33:50,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:33:50,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:33:50,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:33:50,252 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:33:50,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-10-15 21:33:50,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a3a226c/ba1e7f11222e4b2185a36a7d4da566aa/FLAG2e08e3ea2 [2022-10-15 21:33:51,383 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:33:51,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-10-15 21:33:51,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a3a226c/ba1e7f11222e4b2185a36a7d4da566aa/FLAG2e08e3ea2 [2022-10-15 21:33:51,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25a3a226c/ba1e7f11222e4b2185a36a7d4da566aa [2022-10-15 21:33:51,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:33:51,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:33:51,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:33:51,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:33:51,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:33:51,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:33:51" (1/1) ... [2022-10-15 21:33:51,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e69885c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:51, skipping insertion in model container [2022-10-15 21:33:51,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:33:51" (1/1) ... [2022-10-15 21:33:51,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:33:51,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:33:52,886 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2022-10-15 21:33:53,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:33:53,802 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:33:53,901 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-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2022-10-15 21:33:54,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:33:54,639 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:33:54,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54 WrapperNode [2022-10-15 21:33:54,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:33:54,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:33:54,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:33:54,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:33:54,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:54,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:54,977 INFO L138 Inliner]: procedures = 256, calls = 2398, calls flagged for inlining = 116, calls inlined = 95, statements flattened = 3977 [2022-10-15 21:33:54,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:33:54,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:33:54,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:33:54,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:33:54,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:54,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,235 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:33:55,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:33:55,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:33:55,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:33:55,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (1/1) ... [2022-10-15 21:33:55,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:33:55,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:33:55,354 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 21:33:55,428 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 21:33:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-10-15 21:33:55,491 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-10-15 21:33:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-15 21:33:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-15 21:33:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:33:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:33:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-10-15 21:33:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:33:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:33:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:33:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:33:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-10-15 21:33:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-10-15 21:33:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-15 21:33:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-15 21:33:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-10-15 21:33:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-10-15 21:33:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:33:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:33:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-10-15 21:33:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-10-15 21:33:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-10-15 21:33:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-10-15 21:33:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-15 21:33:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-15 21:33:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:33:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:33:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-10-15 21:33:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-10-15 21:33:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-10-15 21:33:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-10-15 21:33:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2022-10-15 21:33:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2022-10-15 21:33:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:33:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:33:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-15 21:33:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-15 21:33:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:33:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:33:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2022-10-15 21:33:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2022-10-15 21:33:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:33:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-10-15 21:33:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-10-15 21:33:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:33:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-10-15 21:33:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-10-15 21:33:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-10-15 21:33:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-10-15 21:33:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:33:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:33:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-15 21:33:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-15 21:33:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-15 21:33:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-15 21:33:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:33:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:33:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-10-15 21:33:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-10-15 21:33:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-10-15 21:33:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-10-15 21:33:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:33:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:33:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:33:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:33:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:33:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-15 21:33:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-15 21:33:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-10-15 21:33:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-10-15 21:33:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-15 21:33:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-15 21:33:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:33:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-10-15 21:33:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-10-15 21:33:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-10-15 21:33:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-10-15 21:33:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:33:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-10-15 21:33:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-10-15 21:33:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-10-15 21:33:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-10-15 21:33:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:33:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:33:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2022-10-15 21:33:55,509 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2022-10-15 21:33:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:33:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:33:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-15 21:33:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-15 21:33:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-10-15 21:33:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-10-15 21:33:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:33:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:33:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:33:55,513 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-10-15 21:33:55,513 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-10-15 21:33:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-10-15 21:33:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-10-15 21:33:55,515 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-10-15 21:33:55,515 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-10-15 21:33:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:33:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:33:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2022-10-15 21:33:55,516 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2022-10-15 21:33:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:33:55,516 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-10-15 21:33:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-10-15 21:33:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-10-15 21:33:55,517 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-10-15 21:33:55,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2022-10-15 21:33:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2022-10-15 21:33:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-10-15 21:33:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-10-15 21:33:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:33:55,518 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2022-10-15 21:33:55,518 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2022-10-15 21:33:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:33:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-10-15 21:33:55,519 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-10-15 21:33:55,519 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-15 21:33:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-10-15 21:33:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-10-15 21:33:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-10-15 21:33:55,526 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-10-15 21:33:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-10-15 21:33:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-10-15 21:33:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-15 21:33:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-15 21:33:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2022-10-15 21:33:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2022-10-15 21:33:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-10-15 21:33:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-10-15 21:33:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-10-15 21:33:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-10-15 21:33:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-10-15 21:33:55,532 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-10-15 21:33:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:33:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-15 21:33:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-15 21:33:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:33:55,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:33:56,222 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:33:56,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:33:56,782 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:34:02,746 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:34:02,768 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:34:02,768 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-15 21:34:02,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:34:02 BoogieIcfgContainer [2022-10-15 21:34:02,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:34:02,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:34:02,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:34:02,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:34:02,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:33:51" (1/3) ... [2022-10-15 21:34:02,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e94994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:34:02, skipping insertion in model container [2022-10-15 21:34:02,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:54" (2/3) ... [2022-10-15 21:34:02,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e94994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:34:02, skipping insertion in model container [2022-10-15 21:34:02,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:34:02" (3/3) ... [2022-10-15 21:34:02,789 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-10-15 21:34:02,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:34:02,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-10-15 21:34:02,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:34:02,936 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;@7e3d469b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:34:02,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-10-15 21:34:02,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 1202 states, 828 states have (on average 1.393719806763285) internal successors, (1154), 887 states have internal predecessors, (1154), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) [2022-10-15 21:34:02,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-15 21:34:02,969 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:34:02,970 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:02,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vfd_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vfd_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, vfd_writeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-10-15 21:34:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:34:02,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1831681561, now seen corresponding path program 1 times [2022-10-15 21:34:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:34:02,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496022533] [2022-10-15 21:34:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:34:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:34:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:34:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:34:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:34:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:34:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:34:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:34:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:34:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:34:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:34:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-15 21:34:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-15 21:34:04,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:34:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496022533] [2022-10-15 21:34:04,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496022533] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:34:04,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:34:04,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:34:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108647719] [2022-10-15 21:34:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:34:04,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:34:04,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:34:04,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:34:04,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:34:04,346 INFO L87 Difference]: Start difference. First operand has 1202 states, 828 states have (on average 1.393719806763285) internal successors, (1154), 887 states have internal predecessors, (1154), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-15 21:34:10,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:34:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:34:17,553 INFO L93 Difference]: Finished difference Result 3544 states and 5264 transitions. [2022-10-15 21:34:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:34:17,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-10-15 21:34:17,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:34:17,610 INFO L225 Difference]: With dead ends: 3544 [2022-10-15 21:34:17,611 INFO L226 Difference]: Without dead ends: 2292 [2022-10-15 21:34:17,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:34:17,640 INFO L413 NwaCegarLoop]: 1881 mSDtfsCounter, 1683 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 4736 SdHoareTripleChecker+Invalid, 2478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:34:17,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 4736 Invalid, 2478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [607 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-10-15 21:34:17,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2022-10-15 21:34:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2198. [2022-10-15 21:34:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 1548 states have (on average 1.3565891472868217) internal successors, (2100), 1600 states have internal predecessors, (2100), 493 states have call successors, (493), 119 states have call predecessors, (493), 119 states have return successors, (493), 490 states have call predecessors, (493), 493 states have call successors, (493) [2022-10-15 21:34:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 3086 transitions. [2022-10-15 21:34:17,970 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 3086 transitions. Word has length 72 [2022-10-15 21:34:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:34:17,971 INFO L495 AbstractCegarLoop]: Abstraction has 2198 states and 3086 transitions. [2022-10-15 21:34:17,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-15 21:34:17,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 3086 transitions. [2022-10-15 21:34:17,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-15 21:34:17,979 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:34:17,979 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:17,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:34:17,980 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [vfd_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vfd_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, vfd_writeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-10-15 21:34:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:34:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 378582827, now seen corresponding path program 1 times [2022-10-15 21:34:17,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:34:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611431370] [2022-10-15 21:34:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:34:17,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:34:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:34:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:34:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:34:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:34:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:34:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:34:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:34:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:34:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:34:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:34:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-15 21:34:18,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:34:18,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611431370] [2022-10-15 21:34:18,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611431370] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:34:18,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:34:18,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:34:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517764038] [2022-10-15 21:34:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:34:18,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:34:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:34:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:34:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:34:18,808 INFO L87 Difference]: Start difference. First operand 2198 states and 3086 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-15 21:34:34,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:34:34,109 INFO L93 Difference]: Finished difference Result 6472 states and 9180 transitions. [2022-10-15 21:34:34,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:34:34,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-10-15 21:34:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:34:34,154 INFO L225 Difference]: With dead ends: 6472 [2022-10-15 21:34:34,155 INFO L226 Difference]: Without dead ends: 4297 [2022-10-15 21:34:34,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 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 21:34:34,172 INFO L413 NwaCegarLoop]: 2034 mSDtfsCounter, 1645 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 1898 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 5044 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:34:34,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 5044 Invalid, 2432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [534 Valid, 1898 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-10-15 21:34:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2022-10-15 21:34:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4123. [2022-10-15 21:34:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4123 states, 2940 states have (on average 1.35578231292517) internal successors, (3986), 3006 states have internal predecessors, (3986), 914 states have call successors, (914), 231 states have call predecessors, (914), 231 states have return successors, (914), 909 states have call predecessors, (914), 914 states have call successors, (914) [2022-10-15 21:34:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4123 states to 4123 states and 5814 transitions. [2022-10-15 21:34:34,444 INFO L78 Accepts]: Start accepts. Automaton has 4123 states and 5814 transitions. Word has length 78 [2022-10-15 21:34:34,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:34:34,445 INFO L495 AbstractCegarLoop]: Abstraction has 4123 states and 5814 transitions. [2022-10-15 21:34:34,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-10-15 21:34:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4123 states and 5814 transitions. [2022-10-15 21:34:34,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-15 21:34:34,449 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:34:34,450 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:34:34,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:34:34,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [vfd_writeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, vfd_writeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, vfd_writeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-10-15 21:34:34,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:34:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash 697537285, now seen corresponding path program 1 times [2022-10-15 21:34:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:34:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012796430] [2022-10-15 21:34:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:34:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:34:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:34:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:34:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:34:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:34:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:34:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:34:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:34:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-10-15 21:34:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-10-15 21:34:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-15 21:34:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:34:35,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:34:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-15 21:34:35,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:34:35,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012796430] [2022-10-15 21:34:35,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012796430] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:34:35,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:34:35,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:34:35,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891425593] [2022-10-15 21:34:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:34:35,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:34:35,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:34:35,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:34:35,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:34:35,111 INFO L87 Difference]: Start difference. First operand 4123 states and 5814 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)