/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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:15:47,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:15:47,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:15:48,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:15:48,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:15:48,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:15:48,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:15:48,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:15:48,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:15:48,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:15:48,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:15:48,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:15:48,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:15:48,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:15:48,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:15:48,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:15:48,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:15:48,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:15:48,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:15:48,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:15:48,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:15:48,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:15:48,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:15:48,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:15:48,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:15:48,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:15:48,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:15:48,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:15:48,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:15:48,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:15:48,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:15:48,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:15:48,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:15:48,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:15:48,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:15:48,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:15:48,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:15:48,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:15:48,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:15:48,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:15:48,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:15:48,087 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 21:15:48,152 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:15:48,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:15:48,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:15:48,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:15:48,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:15:48,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:15:48,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:15:48,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:15:48,159 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:15:48,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:15:48,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:15:48,161 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:15:48,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:15:48,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:15:48,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:15:48,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:15:48,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:15:48,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:15:48,163 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:15:48,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:15:48,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:15:48,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:15:48,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:15:48,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:15:48,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:15:48,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:15:48,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:15:48,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:15:48,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:15:48,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:15:48,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:15:48,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:15:48,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:15:48,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:15:48,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:15:48,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:15:48,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:15:48,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:15:48,685 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:15:48,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-10-15 21:15:48,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b248ac9a/b2461f4c15f64b9092fa1286a07d037e/FLAG32d4e84db [2022-10-15 21:15:50,082 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:15:50,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-10-15 21:15:50,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b248ac9a/b2461f4c15f64b9092fa1286a07d037e/FLAG32d4e84db [2022-10-15 21:15:50,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b248ac9a/b2461f4c15f64b9092fa1286a07d037e [2022-10-15 21:15:50,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:15:50,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:15:50,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:50,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:15:50,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:15:50,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:50" (1/1) ... [2022-10-15 21:15:50,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a635ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:50, skipping insertion in model container [2022-10-15 21:15:50,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:15:50" (1/1) ... [2022-10-15 21:15:50,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:15:50,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:15:52,148 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[180577,180590] [2022-10-15 21:15:53,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:53,247 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:15:53,660 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-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[180577,180590] [2022-10-15 21:15:54,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:15:54,140 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:15:54,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54 WrapperNode [2022-10-15 21:15:54,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:15:54,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:54,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:15:54,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:15:54,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,413 INFO L138 Inliner]: procedures = 180, calls = 1285, calls flagged for inlining = 87, calls inlined = 41, statements flattened = 1760 [2022-10-15 21:15:54,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:15:54,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:15:54,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:15:54,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:15:54,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:15:54,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:15:54,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:15:54,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:15:54,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (1/1) ... [2022-10-15 21:15:54,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:15:54,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:15:54,663 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 21:15:54,691 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 21:15:54,756 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2022-10-15 21:15:54,756 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2022-10-15 21:15:54,757 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2022-10-15 21:15:54,758 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2022-10-15 21:15:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-10-15 21:15:54,758 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-10-15 21:15:54,758 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-10-15 21:15:54,758 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-10-15 21:15:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-10-15 21:15:54,759 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-10-15 21:15:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:15:54,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:15:54,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:15:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-10-15 21:15:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-10-15 21:15:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-15 21:15:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-15 21:15:54,760 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-15 21:15:54,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-15 21:15:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:15:54,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:15:54,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-15 21:15:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-15 21:15:54,818 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2022-10-15 21:15:54,818 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2022-10-15 21:15:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2022-10-15 21:15:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2022-10-15 21:15:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-15 21:15:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-15 21:15:54,819 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:15:54,819 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:15:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2022-10-15 21:15:54,820 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2022-10-15 21:15:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:15:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-10-15 21:15:54,820 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-10-15 21:15:54,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:15:54,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:15:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2022-10-15 21:15:54,823 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2022-10-15 21:15:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:15:54,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:15:54,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:15:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:15:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:15:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2022-10-15 21:15:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2022-10-15 21:15:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2022-10-15 21:15:54,824 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2022-10-15 21:15:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:15:54,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2022-10-15 21:15:54,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2022-10-15 21:15:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:15:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:15:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-15 21:15:54,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:15:54,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-15 21:15:54,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-15 21:15:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-15 21:15:54,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-15 21:15:54,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-10-15 21:15:54,828 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-10-15 21:15:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-15 21:15:54,829 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-15 21:15:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:15:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:15:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2022-10-15 21:15:54,829 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2022-10-15 21:15:54,829 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-15 21:15:54,830 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-15 21:15:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-10-15 21:15:54,830 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-10-15 21:15:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-15 21:15:54,830 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-15 21:15:54,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:15:54,831 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-15 21:15:54,836 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-15 21:15:54,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-10-15 21:15:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-10-15 21:15:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:15:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:15:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:15:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:15:54,837 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-10-15 21:15:54,837 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-10-15 21:15:55,475 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:15:55,479 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:15:56,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:15:57,885 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:15:57,902 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:15:57,902 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 21:15:57,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:57 BoogieIcfgContainer [2022-10-15 21:15:57,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:15:57,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:15:57,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:15:57,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:15:57,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:15:50" (1/3) ... [2022-10-15 21:15:57,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6f4158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:57, skipping insertion in model container [2022-10-15 21:15:57,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:15:54" (2/3) ... [2022-10-15 21:15:57,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6f4158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:15:57, skipping insertion in model container [2022-10-15 21:15:57,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:15:57" (3/3) ... [2022-10-15 21:15:57,928 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2022-10-15 21:15:57,960 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:15:57,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-10-15 21:15:58,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:15:58,151 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;@29421708, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:15:58,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-10-15 21:15:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 567 states, 406 states have (on average 1.3990147783251232) internal successors, (568), 443 states have internal predecessors, (568), 101 states have call successors, (101), 36 states have call predecessors, (101), 35 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2022-10-15 21:15:58,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-15 21:15:58,206 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:15:58,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:15:58,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:15:58,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:15:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2057351254, now seen corresponding path program 1 times [2022-10-15 21:15:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:15:58,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289337666] [2022-10-15 21:15:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:15:58,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:15:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:15:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:15:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:59,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-10-15 21:15:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:15:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:15:59,187 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 21:15:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:15:59,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289337666] [2022-10-15 21:15:59,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289337666] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:15:59,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:15:59,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:15:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384122373] [2022-10-15 21:15:59,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:15:59,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:15:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:15:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:15:59,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:15:59,245 INFO L87 Difference]: Start difference. First operand has 567 states, 406 states have (on average 1.3990147783251232) internal successors, (568), 443 states have internal predecessors, (568), 101 states have call successors, (101), 36 states have call predecessors, (101), 35 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:16:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:01,585 INFO L93 Difference]: Finished difference Result 1285 states and 1767 transitions. [2022-10-15 21:16:01,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:16:01,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2022-10-15 21:16:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:01,613 INFO L225 Difference]: With dead ends: 1285 [2022-10-15 21:16:01,613 INFO L226 Difference]: Without dead ends: 690 [2022-10-15 21:16:01,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:16:01,630 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 580 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:01,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1868 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-15 21:16:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-10-15 21:16:01,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 613. [2022-10-15 21:16:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 447 states have (on average 1.3870246085011186) internal successors, (620), 482 states have internal predecessors, (620), 103 states have call successors, (103), 39 states have call predecessors, (103), 39 states have return successors, (103), 97 states have call predecessors, (103), 103 states have call successors, (103) [2022-10-15 21:16:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 826 transitions. [2022-10-15 21:16:01,871 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 826 transitions. Word has length 50 [2022-10-15 21:16:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:01,872 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 826 transitions. [2022-10-15 21:16:01,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:16:01,873 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 826 transitions. [2022-10-15 21:16:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 21:16:01,885 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:01,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:01,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:16:01,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:01,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash -931546903, now seen corresponding path program 1 times [2022-10-15 21:16:01,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:01,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120874221] [2022-10-15 21:16:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:02,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:16:02,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:02,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120874221] [2022-10-15 21:16:02,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120874221] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:02,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:02,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:16:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958915729] [2022-10-15 21:16:02,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:02,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:16:02,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:02,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:16:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:16:02,664 INFO L87 Difference]: Start difference. First operand 613 states and 826 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 21:16:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:05,875 INFO L93 Difference]: Finished difference Result 1435 states and 1938 transitions. [2022-10-15 21:16:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:16:05,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 66 [2022-10-15 21:16:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:05,893 INFO L225 Difference]: With dead ends: 1435 [2022-10-15 21:16:05,894 INFO L226 Difference]: Without dead ends: 1429 [2022-10-15 21:16:05,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:16:05,898 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 1622 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 676 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:05,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 2018 Invalid, 1940 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [676 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-15 21:16:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2022-10-15 21:16:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1178. [2022-10-15 21:16:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 876 states have (on average 1.3858447488584476) internal successors, (1214), 923 states have internal predecessors, (1214), 203 states have call successors, (203), 75 states have call predecessors, (203), 75 states have return successors, (203), 191 states have call predecessors, (203), 203 states have call successors, (203) [2022-10-15 21:16:06,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1620 transitions. [2022-10-15 21:16:06,030 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1620 transitions. Word has length 66 [2022-10-15 21:16:06,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:06,031 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1620 transitions. [2022-10-15 21:16:06,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-15 21:16:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1620 transitions. [2022-10-15 21:16:06,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-15 21:16:06,035 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:06,035 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:06,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:16:06,036 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:06,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:06,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1572837635, now seen corresponding path program 1 times [2022-10-15 21:16:06,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:06,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299829757] [2022-10-15 21:16:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:06,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:06,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:06,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:16:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-15 21:16:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:16:06,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:06,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299829757] [2022-10-15 21:16:06,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299829757] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:06,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:06,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:16:06,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801878034] [2022-10-15 21:16:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:06,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:16:06,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:06,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:16:06,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:16:06,512 INFO L87 Difference]: Start difference. First operand 1178 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 21:16:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:08,871 INFO L93 Difference]: Finished difference Result 2425 states and 3322 transitions. [2022-10-15 21:16:08,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 21:16:08,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70 [2022-10-15 21:16:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:08,886 INFO L225 Difference]: With dead ends: 2425 [2022-10-15 21:16:08,887 INFO L226 Difference]: Without dead ends: 1271 [2022-10-15 21:16:08,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:08,894 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 844 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1755 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-15 21:16:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-10-15 21:16:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1161. [2022-10-15 21:16:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 867 states have (on average 1.3737024221453287) internal successors, (1191), 917 states have internal predecessors, (1191), 187 states have call successors, (187), 83 states have call predecessors, (187), 83 states have return successors, (187), 172 states have call predecessors, (187), 187 states have call successors, (187) [2022-10-15 21:16:08,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1565 transitions. [2022-10-15 21:16:08,994 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1565 transitions. Word has length 70 [2022-10-15 21:16:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:08,995 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 1565 transitions. [2022-10-15 21:16:08,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-15 21:16:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1565 transitions. [2022-10-15 21:16:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-10-15 21:16:08,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:08,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:09,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:16:09,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:09,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2129527433, now seen corresponding path program 1 times [2022-10-15 21:16:09,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:09,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779392946] [2022-10-15 21:16:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:09,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:16:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-15 21:16:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:16:09,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:09,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779392946] [2022-10-15 21:16:09,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779392946] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:09,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:09,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-15 21:16:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978667975] [2022-10-15 21:16:09,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:09,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 21:16:09,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 21:16:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:09,762 INFO L87 Difference]: Start difference. First operand 1161 states and 1565 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:16:13,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:13,632 INFO L93 Difference]: Finished difference Result 3541 states and 5108 transitions. [2022-10-15 21:16:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 21:16:13,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2022-10-15 21:16:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:13,662 INFO L225 Difference]: With dead ends: 3541 [2022-10-15 21:16:13,662 INFO L226 Difference]: Without dead ends: 2458 [2022-10-15 21:16:13,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-10-15 21:16:13,678 INFO L413 NwaCegarLoop]: 1258 mSDtfsCounter, 1550 mSDsluCounter, 4035 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 5293 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:13,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 5293 Invalid, 2674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [494 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-10-15 21:16:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2022-10-15 21:16:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1167. [2022-10-15 21:16:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 873 states have (on average 1.3711340206185567) internal successors, (1197), 923 states have internal predecessors, (1197), 187 states have call successors, (187), 83 states have call predecessors, (187), 83 states have return successors, (187), 172 states have call predecessors, (187), 187 states have call successors, (187) [2022-10-15 21:16:13,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1571 transitions. [2022-10-15 21:16:13,868 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1571 transitions. Word has length 88 [2022-10-15 21:16:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:13,872 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1571 transitions. [2022-10-15 21:16:13,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:16:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1571 transitions. [2022-10-15 21:16:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-10-15 21:16:13,880 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:13,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:13,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:16:13,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:13,882 INFO L85 PathProgramCache]: Analyzing trace with hash -995258384, now seen corresponding path program 1 times [2022-10-15 21:16:13,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:13,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610627942] [2022-10-15 21:16:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:13,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:16:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-15 21:16:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:16:14,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:14,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610627942] [2022-10-15 21:16:14,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610627942] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:14,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:14,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:16:14,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058001425] [2022-10-15 21:16:14,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:14,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:16:14,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:16:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:16:14,478 INFO L87 Difference]: Start difference. First operand 1167 states and 1571 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:16:16,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:16,837 INFO L93 Difference]: Finished difference Result 1766 states and 2504 transitions. [2022-10-15 21:16:16,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:16:16,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2022-10-15 21:16:16,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:16,854 INFO L225 Difference]: With dead ends: 1766 [2022-10-15 21:16:16,854 INFO L226 Difference]: Without dead ends: 1764 [2022-10-15 21:16:16,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:16:16,858 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 896 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:16,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 2224 Invalid, 1388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-15 21:16:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2022-10-15 21:16:16,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1279. [2022-10-15 21:16:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 961 states have (on average 1.368366285119667) internal successors, (1315), 1011 states have internal predecessors, (1315), 211 states have call successors, (211), 83 states have call predecessors, (211), 83 states have return successors, (211), 196 states have call predecessors, (211), 211 states have call successors, (211) [2022-10-15 21:16:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1737 transitions. [2022-10-15 21:16:17,004 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1737 transitions. Word has length 90 [2022-10-15 21:16:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:17,005 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 1737 transitions. [2022-10-15 21:16:17,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:16:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1737 transitions. [2022-10-15 21:16:17,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-10-15 21:16:17,009 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:17,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:17,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:16:17,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:17,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1167538950, now seen corresponding path program 1 times [2022-10-15 21:16:17,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:17,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981811952] [2022-10-15 21:16:17,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:17,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-10-15 21:16:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-15 21:16:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-15 21:16:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:17,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981811952] [2022-10-15 21:16:17,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981811952] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:16:17,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141660759] [2022-10-15 21:16:17,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:17,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:16:17,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:16:17,835 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 21:16:17,862 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 21:16:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:18,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-15 21:16:18,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:16:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-15 21:16:18,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:16:18,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141660759] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:18,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:16:18,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-15 21:16:18,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440057810] [2022-10-15 21:16:18,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:18,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 21:16:18,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 21:16:18,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:18,554 INFO L87 Difference]: Start difference. First operand 1279 states and 1737 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-15 21:16:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:18,773 INFO L93 Difference]: Finished difference Result 2013 states and 2715 transitions. [2022-10-15 21:16:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 21:16:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 97 [2022-10-15 21:16:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:18,783 INFO L225 Difference]: With dead ends: 2013 [2022-10-15 21:16:18,784 INFO L226 Difference]: Without dead ends: 1228 [2022-10-15 21:16:18,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:18,789 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 384 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:18,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1375 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:16:18,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-10-15 21:16:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1225. [2022-10-15 21:16:18,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 916 states have (on average 1.3580786026200873) internal successors, (1244), 962 states have internal predecessors, (1244), 205 states have call successors, (205), 80 states have call predecessors, (205), 80 states have return successors, (205), 193 states have call predecessors, (205), 205 states have call successors, (205) [2022-10-15 21:16:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1654 transitions. [2022-10-15 21:16:18,898 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1654 transitions. Word has length 97 [2022-10-15 21:16:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:18,898 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 1654 transitions. [2022-10-15 21:16:18,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-10-15 21:16:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1654 transitions. [2022-10-15 21:16:18,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-15 21:16:18,903 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:18,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:18,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-15 21:16:19,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-15 21:16:19,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:19,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1363606898, now seen corresponding path program 1 times [2022-10-15 21:16:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:19,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125981885] [2022-10-15 21:16:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:19,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-10-15 21:16:19,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-15 21:16:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 21:16:19,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:19,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125981885] [2022-10-15 21:16:19,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125981885] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:19,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:19,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:16:19,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780346935] [2022-10-15 21:16:19,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:19,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:16:19,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:16:19,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:16:19,552 INFO L87 Difference]: Start difference. First operand 1225 states and 1654 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:16:22,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:22,360 INFO L93 Difference]: Finished difference Result 2244 states and 3024 transitions. [2022-10-15 21:16:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:16:22,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-10-15 21:16:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:22,380 INFO L225 Difference]: With dead ends: 2244 [2022-10-15 21:16:22,381 INFO L226 Difference]: Without dead ends: 1513 [2022-10-15 21:16:22,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:16:22,387 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 690 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:22,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 2275 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-10-15 21:16:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-10-15 21:16:22,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1363. [2022-10-15 21:16:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1022 states have (on average 1.3590998043052838) internal successors, (1389), 1073 states have internal predecessors, (1389), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (225), 210 states have call predecessors, (225), 225 states have call successors, (225) [2022-10-15 21:16:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1839 transitions. [2022-10-15 21:16:22,515 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1839 transitions. Word has length 101 [2022-10-15 21:16:22,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:22,516 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1839 transitions. [2022-10-15 21:16:22,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:16:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1839 transitions. [2022-10-15 21:16:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-10-15 21:16:22,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:22,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 21:16:22,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:22,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1408933623, now seen corresponding path program 1 times [2022-10-15 21:16:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:22,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755582781] [2022-10-15 21:16:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:22,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:23,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:16:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-15 21:16:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-15 21:16:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-15 21:16:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 21:16:23,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755582781] [2022-10-15 21:16:23,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755582781] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:16:23,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405321231] [2022-10-15 21:16:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:23,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:16:23,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:16:23,317 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 21:16:23,346 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 21:16:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:23,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:16:23,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:16:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 21:16:24,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 21:16:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 21:16:24,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405321231] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 21:16:24,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 21:16:24,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 9 [2022-10-15 21:16:24,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181224605] [2022-10-15 21:16:24,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 21:16:24,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-15 21:16:24,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-15 21:16:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-15 21:16:24,258 INFO L87 Difference]: Start difference. First operand 1363 states and 1839 transitions. Second operand has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 7 states have internal predecessors, (134), 6 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-10-15 21:16:27,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:27,714 INFO L93 Difference]: Finished difference Result 2916 states and 4338 transitions. [2022-10-15 21:16:27,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 21:16:27,715 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 7 states have internal predecessors, (134), 6 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 113 [2022-10-15 21:16:27,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:27,743 INFO L225 Difference]: With dead ends: 2916 [2022-10-15 21:16:27,744 INFO L226 Difference]: Without dead ends: 2915 [2022-10-15 21:16:27,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:16:27,748 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 1906 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 2626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:27,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2108 Valid, 3531 Invalid, 2626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-10-15 21:16:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2022-10-15 21:16:27,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 1362. [2022-10-15 21:16:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1022 states have (on average 1.3571428571428572) internal successors, (1387), 1072 states have internal predecessors, (1387), 225 states have call successors, (225), 92 states have call predecessors, (225), 92 states have return successors, (225), 210 states have call predecessors, (225), 225 states have call successors, (225) [2022-10-15 21:16:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1837 transitions. [2022-10-15 21:16:27,909 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1837 transitions. Word has length 113 [2022-10-15 21:16:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:27,909 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1837 transitions. [2022-10-15 21:16:27,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.88888888888889) internal successors, (134), 7 states have internal predecessors, (134), 6 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-10-15 21:16:27,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1837 transitions. [2022-10-15 21:16:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-15 21:16:27,918 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:27,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:27,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 21:16:28,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-15 21:16:28,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash -727268531, now seen corresponding path program 1 times [2022-10-15 21:16:28,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:28,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239878518] [2022-10-15 21:16:28,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:28,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-10-15 21:16:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-15 21:16:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-10-15 21:16:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-10-15 21:16:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 21:16:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:28,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239878518] [2022-10-15 21:16:28,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239878518] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 21:16:28,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402924020] [2022-10-15 21:16:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:28,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:16:28,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:16:28,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 21:16:28,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 21:16:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:29,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2538 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 21:16:29,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 21:16:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-15 21:16:29,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 21:16:29,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402924020] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:29,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 21:16:29,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-10-15 21:16:29,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829311161] [2022-10-15 21:16:29,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:29,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:16:29,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:16:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:29,497 INFO L87 Difference]: Start difference. First operand 1362 states and 1837 transitions. Second operand has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-15 21:16:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:29,745 INFO L93 Difference]: Finished difference Result 1952 states and 2751 transitions. [2022-10-15 21:16:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 21:16:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 114 [2022-10-15 21:16:29,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:29,762 INFO L225 Difference]: With dead ends: 1952 [2022-10-15 21:16:29,762 INFO L226 Difference]: Without dead ends: 1951 [2022-10-15 21:16:29,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-15 21:16:29,766 INFO L413 NwaCegarLoop]: 1152 mSDtfsCounter, 430 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:29,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2656 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 21:16:29,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-10-15 21:16:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1249. [2022-10-15 21:16:29,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 934 states have (on average 1.3565310492505354) internal successors, (1267), 983 states have internal predecessors, (1267), 201 states have call successors, (201), 92 states have call predecessors, (201), 92 states have return successors, (201), 186 states have call predecessors, (201), 201 states have call successors, (201) [2022-10-15 21:16:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1669 transitions. [2022-10-15 21:16:29,899 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1669 transitions. Word has length 114 [2022-10-15 21:16:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:29,900 INFO L495 AbstractCegarLoop]: Abstraction has 1249 states and 1669 transitions. [2022-10-15 21:16:29,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 28.333333333333332) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-15 21:16:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1669 transitions. [2022-10-15 21:16:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-15 21:16:29,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:29,907 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:29,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 21:16:30,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 21:16:30,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2010372392, now seen corresponding path program 1 times [2022-10-15 21:16:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:30,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694192212] [2022-10-15 21:16:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:30,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:16:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-15 21:16:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-10-15 21:16:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:16:30,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:16:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-15 21:16:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-10-15 21:16:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-10-15 21:16:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:16:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-10-15 21:16:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:16:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-10-15 21:16:30,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:16:30,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694192212] [2022-10-15 21:16:30,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694192212] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:16:30,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:16:30,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:16:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905018181] [2022-10-15 21:16:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:16:30,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:16:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:16:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:16:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:16:30,653 INFO L87 Difference]: Start difference. First operand 1249 states and 1669 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 21:16:32,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:16:32,722 INFO L93 Difference]: Finished difference Result 2571 states and 3440 transitions. [2022-10-15 21:16:32,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:16:32,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 127 [2022-10-15 21:16:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:16:32,734 INFO L225 Difference]: With dead ends: 2571 [2022-10-15 21:16:32,734 INFO L226 Difference]: Without dead ends: 1400 [2022-10-15 21:16:32,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:16:32,741 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 486 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:16:32,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1996 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-15 21:16:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-10-15 21:16:32,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1251. [2022-10-15 21:16:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 936 states have (on average 1.3557692307692308) internal successors, (1269), 985 states have internal predecessors, (1269), 201 states have call successors, (201), 92 states have call predecessors, (201), 92 states have return successors, (201), 186 states have call predecessors, (201), 201 states have call successors, (201) [2022-10-15 21:16:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 1671 transitions. [2022-10-15 21:16:32,851 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 1671 transitions. Word has length 127 [2022-10-15 21:16:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:16:32,852 INFO L495 AbstractCegarLoop]: Abstraction has 1251 states and 1671 transitions. [2022-10-15 21:16:32,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 21:16:32,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 1671 transitions. [2022-10-15 21:16:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-10-15 21:16:32,857 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:16:32,857 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:16:32,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 21:16:32,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_skb_allocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_skb_allocErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-10-15 21:16:32,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:16:32,858 INFO L85 PathProgramCache]: Analyzing trace with hash -749455142, now seen corresponding path program 1 times [2022-10-15 21:16:32,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:16:32,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557685586] [2022-10-15 21:16:32,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:16:32,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:16:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat