/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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:13:50,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:13:50,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:13:50,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:13:50,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:13:50,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:13:50,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:13:50,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:13:50,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:13:50,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:13:50,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:13:50,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:13:50,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:13:50,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:13:50,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:13:50,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:13:50,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:13:50,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:13:50,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:13:50,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:13:50,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:13:50,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:13:50,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:13:50,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:13:50,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:13:50,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:13:50,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:13:50,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:13:50,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:13:50,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:13:50,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:13:50,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:13:50,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:13:50,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:13:50,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:13:50,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:13:50,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:13:50,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:13:50,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:13:50,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:13:50,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:13:50,297 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 21:13:50,327 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:13:50,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:13:50,328 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:13:50,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:13:50,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:13:50,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:13:50,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:13:50,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:13:50,331 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:13:50,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:13:50,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:13:50,332 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:13:50,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:13:50,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:13:50,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:13:50,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:13:50,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:13:50,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:13:50,334 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:13:50,334 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:13:50,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:13:50,335 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:13:50,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:13:50,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:13:50,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:13:50,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:13:50,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:13:50,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:13:50,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:13:50,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:13:50,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:13:50,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:13:50,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:13:50,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:13:50,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:13:50,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:13:50,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:13:50,843 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:13:50,844 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:13:50,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-10-15 21:13:50,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49999a291/1efe121b9cf14a65b7218baa1ee2041d/FLAGa2be4a059 [2022-10-15 21:13:51,976 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:13:51,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-10-15 21:13:52,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49999a291/1efe121b9cf14a65b7218baa1ee2041d/FLAGa2be4a059 [2022-10-15 21:13:52,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49999a291/1efe121b9cf14a65b7218baa1ee2041d [2022-10-15 21:13:52,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:13:52,395 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:13:52,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:13:52,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:13:52,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:13:52,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:13:52" (1/1) ... [2022-10-15 21:13:52,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c3f658 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:52, skipping insertion in model container [2022-10-15 21:13:52,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:13:52" (1/1) ... [2022-10-15 21:13:52,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:13:52,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:13:53,626 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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-10-15 21:13:54,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:13:54,543 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:13:54,724 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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2022-10-15 21:13:54,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:13:55,030 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:13:55,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55 WrapperNode [2022-10-15 21:13:55,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:13:55,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:13:55,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:13:55,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:13:55,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,299 INFO L138 Inliner]: procedures = 199, calls = 723, calls flagged for inlining = 106, calls inlined = 103, statements flattened = 2546 [2022-10-15 21:13:55,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:13:55,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:13:55,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:13:55,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:13:55,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,502 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:13:55,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:13:55,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:13:55,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:13:55,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (1/1) ... [2022-10-15 21:13:55,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:13:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:13:55,596 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 21:13:55,611 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 21:13:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:13:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:13:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-10-15 21:13:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-10-15 21:13:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:13:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:13:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:13:55,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:13:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup_descriptors [2022-10-15 21:13:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_descriptors [2022-10-15 21:13:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-15 21:13:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-15 21:13:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure disable_all_interrupts [2022-10-15 21:13:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_all_interrupts [2022-10-15 21:13:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:13:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:13:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_interrupt [2022-10-15 21:13:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_interrupt [2022-10-15 21:13:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-15 21:13:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-15 21:13:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:13:55,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:13:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-10-15 21:13:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-10-15 21:13:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-15 21:13:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-15 21:13:55,667 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-15 21:13:55,667 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-15 21:13:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_write_descriptor [2022-10-15 21:13:55,668 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_write_descriptor [2022-10-15 21:13:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-10-15 21:13:55,668 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-10-15 21:13:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:13:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-10-15 21:13:55,668 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-10-15 21:13:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:13:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-15 21:13:55,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-15 21:13:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-10-15 21:13:55,669 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-10-15 21:13:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-10-15 21:13:55,669 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-10-15 21:13:55,669 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-15 21:13:55,670 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-15 21:13:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:13:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:13:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_read_descriptor [2022-10-15 21:13:55,670 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_read_descriptor [2022-10-15 21:13:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-15 21:13:55,670 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-15 21:13:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-10-15 21:13:55,671 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-10-15 21:13:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-15 21:13:55,671 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-15 21:13:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-15 21:13:55,672 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-15 21:13:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-15 21:13:55,672 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-15 21:13:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2022-10-15 21:13:55,672 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2022-10-15 21:13:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:13:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:13:55,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:13:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-10-15 21:13:55,673 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-10-15 21:13:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-10-15 21:13:55,673 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-10-15 21:13:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:13:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-10-15 21:13:55,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-10-15 21:13:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:13:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-10-15 21:13:55,674 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-10-15 21:13:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:13:55,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:13:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_poll_controller [2022-10-15 21:13:55,675 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_poll_controller [2022-10-15 21:13:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:13:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-10-15 21:13:55,675 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-10-15 21:13:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:13:55,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:13:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure receive_active [2022-10-15 21:13:55,676 INFO L138 BoogieDeclarations]: Found implementation of procedure receive_active [2022-10-15 21:13:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:13:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:13:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-10-15 21:13:55,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-10-15 21:13:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:13:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_active [2022-10-15 21:13:55,677 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_active [2022-10-15 21:13:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-10-15 21:13:55,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-10-15 21:13:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_receive [2022-10-15 21:13:55,677 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_receive [2022-10-15 21:13:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-10-15 21:13:55,678 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-10-15 21:13:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-15 21:13:55,678 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-15 21:13:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-10-15 21:13:55,678 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-10-15 21:13:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:13:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:13:55,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:13:56,319 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:13:56,323 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:13:56,685 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:13:58,584 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:13:58,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:13:58,601 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-15 21:13:58,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:13:58 BoogieIcfgContainer [2022-10-15 21:13:58,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:13:58,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:13:58,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:13:58,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:13:58,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:13:52" (1/3) ... [2022-10-15 21:13:58,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5411c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:13:58, skipping insertion in model container [2022-10-15 21:13:58,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:13:55" (2/3) ... [2022-10-15 21:13:58,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5411c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:13:58, skipping insertion in model container [2022-10-15 21:13:58,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:13:58" (3/3) ... [2022-10-15 21:13:58,616 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2022-10-15 21:13:58,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:13:58,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 118 error locations. [2022-10-15 21:13:58,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:13:58,756 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;@5ecc74a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:13:58,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2022-10-15 21:13:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 1114 states, 753 states have (on average 1.50332005312085) internal successors, (1132), 885 states have internal predecessors, (1132), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) [2022-10-15 21:13:58,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 21:13:58,782 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:13:58,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 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 21:13:58,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, investigate_write_descriptorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 116 more)] === [2022-10-15 21:13:58,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:13:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1604459477, now seen corresponding path program 1 times [2022-10-15 21:13:58,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:13:58,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200456467] [2022-10-15 21:13:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:13:58,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:13:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:59,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:13:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:13:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:13:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:13:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:13:59,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:13:59,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200456467] [2022-10-15 21:13:59,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200456467] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:13:59,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:13:59,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:13:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926814301] [2022-10-15 21:13:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:13:59,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:13:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:13:59,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:13:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:13:59,497 INFO L87 Difference]: Start difference. First operand has 1114 states, 753 states have (on average 1.50332005312085) internal successors, (1132), 885 states have internal predecessors, (1132), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:14:01,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:01,998 INFO L93 Difference]: Finished difference Result 3033 states and 4176 transitions. [2022-10-15 21:14:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:14:02,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-10-15 21:14:02,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:02,035 INFO L225 Difference]: With dead ends: 3033 [2022-10-15 21:14:02,036 INFO L226 Difference]: Without dead ends: 1882 [2022-10-15 21:14:02,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:14:02,054 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 1265 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:02,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 3170 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-10-15 21:14:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2022-10-15 21:14:02,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1664. [2022-10-15 21:14:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1194 states have (on average 1.4103852596314908) internal successors, (1684), 1319 states have internal predecessors, (1684), 281 states have call successors, (281), 73 states have call predecessors, (281), 73 states have return successors, (281), 280 states have call predecessors, (281), 281 states have call successors, (281) [2022-10-15 21:14:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2246 transitions. [2022-10-15 21:14:02,384 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2246 transitions. Word has length 35 [2022-10-15 21:14:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:02,385 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2246 transitions. [2022-10-15 21:14:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:14:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2246 transitions. [2022-10-15 21:14:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-10-15 21:14:02,397 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:02,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 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 21:14:02,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:14:02,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONINTEGER_OVERFLOW === [investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, investigate_write_descriptorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 116 more)] === [2022-10-15 21:14:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash -2002432493, now seen corresponding path program 1 times [2022-10-15 21:14:02,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:02,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287556077] [2022-10-15 21:14:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:02,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:02,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:14:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:14:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:02,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-15 21:14:02,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:02,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287556077] [2022-10-15 21:14:02,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287556077] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:02,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:02,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:14:02,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348916552] [2022-10-15 21:14:02,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:02,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:14:02,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:14:02,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:14:02,617 INFO L87 Difference]: Start difference. First operand 1664 states and 2246 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:14:04,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:04,847 INFO L93 Difference]: Finished difference Result 4396 states and 5891 transitions. [2022-10-15 21:14:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:14:04,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-10-15 21:14:04,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:04,869 INFO L225 Difference]: With dead ends: 4396 [2022-10-15 21:14:04,869 INFO L226 Difference]: Without dead ends: 2742 [2022-10-15 21:14:04,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:14:04,878 INFO L413 NwaCegarLoop]: 1455 mSDtfsCounter, 1260 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:04,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 3041 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-15 21:14:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2742 states. [2022-10-15 21:14:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2742 to 2434. [2022-10-15 21:14:05,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 1802 states have (on average 1.4084350721420644) internal successors, (2538), 1935 states have internal predecessors, (2538), 392 states have call successors, (392), 124 states have call predecessors, (392), 124 states have return successors, (392), 388 states have call predecessors, (392), 392 states have call successors, (392) [2022-10-15 21:14:05,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3322 transitions. [2022-10-15 21:14:05,061 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3322 transitions. Word has length 40 [2022-10-15 21:14:05,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:05,061 INFO L495 AbstractCegarLoop]: Abstraction has 2434 states and 3322 transitions. [2022-10-15 21:14:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-15 21:14:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3322 transitions. [2022-10-15 21:14:05,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-15 21:14:05,065 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:05,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:14:05,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:14:05,066 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW === [investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, investigate_write_descriptorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 116 more)] === [2022-10-15 21:14:05,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:05,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1566228868, now seen corresponding path program 1 times [2022-10-15 21:14:05,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:05,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494211746] [2022-10-15 21:14:05,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:05,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:05,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:14:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:05,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:14:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:14:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-15 21:14:05,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:05,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494211746] [2022-10-15 21:14:05,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494211746] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:05,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:05,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 21:14:05,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141963526] [2022-10-15 21:14:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:05,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:14:05,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:14:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:14:05,415 INFO L87 Difference]: Start difference. First operand 2434 states and 3322 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:14:08,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:08,237 INFO L93 Difference]: Finished difference Result 5288 states and 7282 transitions. [2022-10-15 21:14:08,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:14:08,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2022-10-15 21:14:08,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:08,277 INFO L225 Difference]: With dead ends: 5288 [2022-10-15 21:14:08,277 INFO L226 Difference]: Without dead ends: 5280 [2022-10-15 21:14:08,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:14:08,282 INFO L413 NwaCegarLoop]: 1608 mSDtfsCounter, 1718 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:08,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 3274 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-15 21:14:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5280 states. [2022-10-15 21:14:08,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5280 to 4742. [2022-10-15 21:14:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 3597 states have (on average 1.4053377814845704) internal successors, (5055), 3748 states have internal predecessors, (5055), 781 states have call successors, (781), 248 states have call predecessors, (781), 248 states have return successors, (781), 773 states have call predecessors, (781), 781 states have call successors, (781) [2022-10-15 21:14:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 6617 transitions. [2022-10-15 21:14:08,577 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 6617 transitions. Word has length 53 [2022-10-15 21:14:08,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:08,578 INFO L495 AbstractCegarLoop]: Abstraction has 4742 states and 6617 transitions. [2022-10-15 21:14:08,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-15 21:14:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 6617 transitions. [2022-10-15 21:14:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-15 21:14:08,580 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:08,580 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] [2022-10-15 21:14:08,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:14:08,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, investigate_write_descriptorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 116 more)] === [2022-10-15 21:14:08,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 570958250, now seen corresponding path program 1 times [2022-10-15 21:14:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:08,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438187467] [2022-10-15 21:14:08,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:08,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:14:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:14:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-15 21:14:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-15 21:14:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-15 21:14:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 21:14:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 21:14:08,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:08,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438187467] [2022-10-15 21:14:08,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438187467] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:08,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:08,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:14:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695619513] [2022-10-15 21:14:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:08,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:14:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:14:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:14:08,878 INFO L87 Difference]: Start difference. First operand 4742 states and 6617 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:14:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:12,881 INFO L93 Difference]: Finished difference Result 15118 states and 21224 transitions. [2022-10-15 21:14:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:14:12,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-10-15 21:14:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:12,957 INFO L225 Difference]: With dead ends: 15118 [2022-10-15 21:14:12,957 INFO L226 Difference]: Without dead ends: 10386 [2022-10-15 21:14:12,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:14:12,979 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1744 mSDsluCounter, 4058 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1928 SdHoareTripleChecker+Valid, 5782 SdHoareTripleChecker+Invalid, 2849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:12,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1928 Valid, 5782 Invalid, 2849 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [463 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-10-15 21:14:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10386 states. [2022-10-15 21:14:13,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10386 to 9350. [2022-10-15 21:14:13,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9350 states, 7171 states have (on average 1.403848835587784) internal successors, (10067), 7390 states have internal predecessors, (10067), 1559 states have call successors, (1559), 504 states have call predecessors, (1559), 504 states have return successors, (1559), 1511 states have call predecessors, (1559), 1559 states have call successors, (1559) [2022-10-15 21:14:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 13185 transitions. [2022-10-15 21:14:13,635 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 13185 transitions. Word has length 65 [2022-10-15 21:14:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:13,636 INFO L495 AbstractCegarLoop]: Abstraction has 9350 states and 13185 transitions. [2022-10-15 21:14:13,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:14:13,636 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 13185 transitions. [2022-10-15 21:14:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-15 21:14:13,639 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:13,639 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] [2022-10-15 21:14:13,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:14:13,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, investigate_write_descriptorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 116 more)] === [2022-10-15 21:14:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1369890455, now seen corresponding path program 1 times [2022-10-15 21:14:13,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:13,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822165040] [2022-10-15 21:14:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:13,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:14:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:14:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:14,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-15 21:14:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-10-15 21:14:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-15 21:14:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-15 21:14:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 21:14:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:14,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822165040] [2022-10-15 21:14:14,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822165040] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:14,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:14,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:14:14,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498877970] [2022-10-15 21:14:14,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:14,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:14:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:14:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:14:14,064 INFO L87 Difference]: Start difference. First operand 9350 states and 13185 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:14:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:17,974 INFO L93 Difference]: Finished difference Result 29858 states and 42332 transitions. [2022-10-15 21:14:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:14:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-10-15 21:14:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:18,125 INFO L225 Difference]: With dead ends: 29858 [2022-10-15 21:14:18,132 INFO L226 Difference]: Without dead ends: 20518 [2022-10-15 21:14:18,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:14:18,183 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1792 mSDsluCounter, 3951 mSDsCounter, 0 mSdLazyCounter, 2267 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 5601 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:18,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 5601 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2267 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-15 21:14:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20518 states. [2022-10-15 21:14:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20518 to 18598. [2022-10-15 21:14:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18598 states, 14359 states have (on average 1.4019778536109757) internal successors, (20131), 14674 states have internal predecessors, (20131), 3107 states have call successors, (3107), 1016 states have call predecessors, (3107), 1016 states have return successors, (3107), 3019 states have call predecessors, (3107), 3107 states have call successors, (3107) [2022-10-15 21:14:19,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18598 states to 18598 states and 26345 transitions. [2022-10-15 21:14:19,396 INFO L78 Accepts]: Start accepts. Automaton has 18598 states and 26345 transitions. Word has length 66 [2022-10-15 21:14:19,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:19,397 INFO L495 AbstractCegarLoop]: Abstraction has 18598 states and 26345 transitions. [2022-10-15 21:14:19,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:14:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 18598 states and 26345 transitions. [2022-10-15 21:14:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-15 21:14:19,402 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:19,402 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] [2022-10-15 21:14:19,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:14:19,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, investigate_write_descriptorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 116 more)] === [2022-10-15 21:14:19,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1534550567, now seen corresponding path program 1 times [2022-10-15 21:14:19,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:19,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678904832] [2022-10-15 21:14:19,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:19,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:14:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:14:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-10-15 21:14:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-10-15 21:14:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-15 21:14:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-15 21:14:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 21:14:19,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:19,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678904832] [2022-10-15 21:14:19,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678904832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:19,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:19,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:14:19,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122763361] [2022-10-15 21:14:19,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:19,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:14:19,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:19,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:14:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:14:19,810 INFO L87 Difference]: Start difference. First operand 18598 states and 26345 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:14:24,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:24,391 INFO L93 Difference]: Finished difference Result 59422 states and 84572 transitions. [2022-10-15 21:14:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:14:24,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-10-15 21:14:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:24,620 INFO L225 Difference]: With dead ends: 59422 [2022-10-15 21:14:24,620 INFO L226 Difference]: Without dead ends: 40834 [2022-10-15 21:14:24,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:14:24,705 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 1792 mSDsluCounter, 3667 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:24,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 5214 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-15 21:14:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40834 states. [2022-10-15 21:14:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40834 to 37130. [2022-10-15 21:14:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37130 states, 28771 states have (on average 1.4004031837614264) internal successors, (40291), 29270 states have internal predecessors, (40291), 6195 states have call successors, (6195), 2048 states have call predecessors, (6195), 2048 states have return successors, (6195), 6035 states have call predecessors, (6195), 6195 states have call successors, (6195) [2022-10-15 21:14:27,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37130 states to 37130 states and 52681 transitions. [2022-10-15 21:14:27,061 INFO L78 Accepts]: Start accepts. Automaton has 37130 states and 52681 transitions. Word has length 67 [2022-10-15 21:14:27,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:14:27,062 INFO L495 AbstractCegarLoop]: Abstraction has 37130 states and 52681 transitions. [2022-10-15 21:14:27,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:14:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 37130 states and 52681 transitions. [2022-10-15 21:14:27,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-15 21:14:27,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:14:27,066 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] [2022-10-15 21:14:27,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 21:14:27,066 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [investigate_write_descriptorErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, investigate_write_descriptorErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 116 more)] === [2022-10-15 21:14:27,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:14:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -783355020, now seen corresponding path program 1 times [2022-10-15 21:14:27,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:14:27,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616635144] [2022-10-15 21:14:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:14:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:14:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:14:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:14:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:14:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-10-15 21:14:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-10-15 21:14:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-10-15 21:14:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-10-15 21:14:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:14:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-10-15 21:14:27,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:14:27,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616635144] [2022-10-15 21:14:27,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616635144] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:14:27,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:14:27,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:14:27,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525968448] [2022-10-15 21:14:27,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:14:27,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:14:27,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:14:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:14:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:14:27,580 INFO L87 Difference]: Start difference. First operand 37130 states and 52681 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-15 21:14:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:14:33,579 INFO L93 Difference]: Finished difference Result 117773 states and 167840 transitions. [2022-10-15 21:14:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:14:33,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-10-15 21:14:33,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:14:34,206 INFO L225 Difference]: With dead ends: 117773 [2022-10-15 21:14:34,207 INFO L226 Difference]: Without dead ends: 80653 [2022-10-15 21:14:34,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-15 21:14:34,328 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 1800 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1984 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 2750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-15 21:14:34,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1984 Valid, 5191 Invalid, 2750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-15 21:14:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80653 states.