/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 21:33:38,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 21:33:38,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 21:33:38,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 21:33:38,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 21:33:38,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 21:33:38,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 21:33:38,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 21:33:38,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 21:33:38,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 21:33:38,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 21:33:38,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 21:33:38,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 21:33:38,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 21:33:38,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 21:33:38,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 21:33:38,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 21:33:38,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 21:33:38,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 21:33:38,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 21:33:38,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 21:33:38,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 21:33:38,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 21:33:38,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 21:33:38,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 21:33:38,486 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 21:33:38,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 21:33:38,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 21:33:38,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 21:33:38,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 21:33:38,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 21:33:38,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 21:33:38,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 21:33:38,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 21:33:38,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 21:33:38,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 21:33:38,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 21:33:38,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 21:33:38,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 21:33:38,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 21:33:38,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 21:33:38,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-15 21:33:38,559 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 21:33:38,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 21:33:38,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 21:33:38,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 21:33:38,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 21:33:38,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 21:33:38,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 21:33:38,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 21:33:38,566 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 21:33:38,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 21:33:38,568 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 21:33:38,568 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 21:33:38,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 21:33:38,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 21:33:38,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 21:33:38,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-15 21:33:38,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 21:33:38,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-15 21:33:38,569 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-15 21:33:38,570 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 21:33:38,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-15 21:33:38,570 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 21:33:38,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-15 21:33:38,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 21:33:38,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 21:33:38,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 21:33:38,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:33:38,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 21:33:38,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 21:33:38,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-15 21:33:38,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 21:33:38,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 21:33:38,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-15 21:33:38,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 21:33:39,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 21:33:39,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 21:33:39,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 21:33:39,053 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 21:33:39,054 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 21:33:39,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-10-15 21:33:39,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647d6d799/a8b9d7684f5e478faec1e7c3e789530f/FLAG5366103b7 [2022-10-15 21:33:40,085 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 21:33:40,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-10-15 21:33:40,137 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647d6d799/a8b9d7684f5e478faec1e7c3e789530f/FLAG5366103b7 [2022-10-15 21:33:40,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/647d6d799/a8b9d7684f5e478faec1e7c3e789530f [2022-10-15 21:33:40,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 21:33:40,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 21:33:40,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 21:33:40,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 21:33:40,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 21:33:40,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:33:40" (1/1) ... [2022-10-15 21:33:40,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498b30d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:40, skipping insertion in model container [2022-10-15 21:33:40,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 09:33:40" (1/1) ... [2022-10-15 21:33:40,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 21:33:40,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 21:33:41,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-10-15 21:33:42,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:33:42,431 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 21:33:42,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-10-15 21:33:42,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 21:33:43,055 INFO L208 MainTranslator]: Completed translation [2022-10-15 21:33:43,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43 WrapperNode [2022-10-15 21:33:43,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 21:33:43,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 21:33:43,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 21:33:43,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 21:33:43,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,377 INFO L138 Inliner]: procedures = 184, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3275 [2022-10-15 21:33:43,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 21:33:43,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 21:33:43,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 21:33:43,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 21:33:43,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,546 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 21:33:43,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 21:33:43,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 21:33:43,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 21:33:43,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (1/1) ... [2022-10-15 21:33:43,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 21:33:43,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 21:33:43,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-15 21:33:43,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-15 21:33:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-10-15 21:33:43,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-10-15 21:33:43,751 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-10-15 21:33:43,752 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-10-15 21:33:43,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-15 21:33:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-10-15 21:33:43,753 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-10-15 21:33:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-10-15 21:33:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-15 21:33:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-15 21:33:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-15 21:33:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-15 21:33:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 21:33:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-15 21:33:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-15 21:33:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-10-15 21:33:43,755 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-10-15 21:33:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-10-15 21:33:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-10-15 21:33:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-15 21:33:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-15 21:33:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-15 21:33:43,756 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-15 21:33:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-15 21:33:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-15 21:33:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-10-15 21:33:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-10-15 21:33:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-10-15 21:33:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-10-15 21:33:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-15 21:33:43,757 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-15 21:33:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-10-15 21:33:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-10-15 21:33:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 21:33:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-15 21:33:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-15 21:33:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-15 21:33:43,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-15 21:33:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-10-15 21:33:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-10-15 21:33:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 21:33:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 21:33:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-15 21:33:43,759 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-15 21:33:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-10-15 21:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-10-15 21:33:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-15 21:33:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-10-15 21:33:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-10-15 21:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-10-15 21:33:43,761 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-10-15 21:33:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-10-15 21:33:43,762 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-10-15 21:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 21:33:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-10-15 21:33:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-10-15 21:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-10-15 21:33:43,763 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-10-15 21:33:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 21:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 21:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-15 21:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-10-15 21:33:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-10-15 21:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-10-15 21:33:43,764 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-10-15 21:33:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-10-15 21:33:43,765 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-10-15 21:33:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-10-15 21:33:43,766 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-10-15 21:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 21:33:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-10-15 21:33:43,767 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-10-15 21:33:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-10-15 21:33:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-10-15 21:33:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-10-15 21:33:43,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-10-15 21:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-10-15 21:33:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-10-15 21:33:43,769 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-10-15 21:33:43,769 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-10-15 21:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 21:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-10-15 21:33:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-10-15 21:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 21:33:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-10-15 21:33:43,770 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-10-15 21:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-15 21:33:43,771 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-15 21:33:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-10-15 21:33:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-10-15 21:33:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-15 21:33:43,772 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-15 21:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-15 21:33:43,773 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-15 21:33:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-10-15 21:33:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-10-15 21:33:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-10-15 21:33:43,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-10-15 21:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-15 21:33:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-15 21:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-15 21:33:43,775 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-15 21:33:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-10-15 21:33:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-10-15 21:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-15 21:33:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-15 21:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 21:33:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-10-15 21:33:43,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-10-15 21:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-10-15 21:33:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-10-15 21:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-10-15 21:33:43,777 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-10-15 21:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-15 21:33:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-15 21:33:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-15 21:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 21:33:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 21:33:43,778 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-10-15 21:33:43,778 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-10-15 21:33:43,779 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-10-15 21:33:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-10-15 21:33:44,361 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 21:33:44,365 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 21:33:44,660 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-15 21:33:47,729 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 21:33:47,750 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 21:33:47,750 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-15 21:33:47,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:33:47 BoogieIcfgContainer [2022-10-15 21:33:47,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 21:33:47,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 21:33:47,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 21:33:47,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 21:33:47,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 09:33:40" (1/3) ... [2022-10-15 21:33:47,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40332757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:33:47, skipping insertion in model container [2022-10-15 21:33:47,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 09:33:43" (2/3) ... [2022-10-15 21:33:47,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40332757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 09:33:47, skipping insertion in model container [2022-10-15 21:33:47,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 09:33:47" (3/3) ... [2022-10-15 21:33:47,766 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-10-15 21:33:47,790 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 21:33:47,790 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 80 error locations. [2022-10-15 21:33:47,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 21:33:47,929 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;@3e413f52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 21:33:47,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-10-15 21:33:47,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 1246 states, 885 states have (on average 1.4847457627118643) internal successors, (1314), 997 states have internal predecessors, (1314), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-10-15 21:33:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-15 21:33:47,962 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:33:47,963 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:47,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [sl_tx_timeoutErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_tx_timeoutErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_ioctlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-10-15 21:33:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:33:47,970 INFO L85 PathProgramCache]: Analyzing trace with hash 316918147, now seen corresponding path program 1 times [2022-10-15 21:33:47,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:33:47,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849366615] [2022-10-15 21:33:47,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:33:47,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:33:48,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:33:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:33:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:33:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:33:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:33:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:33:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:33:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-15 21:33:48,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:33:48,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849366615] [2022-10-15 21:33:48,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849366615] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:33:48,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:33:48,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:33:48,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240165333] [2022-10-15 21:33:48,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:33:48,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:33:48,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:33:48,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:33:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:33:48,987 INFO L87 Difference]: Start difference. First operand has 1246 states, 885 states have (on average 1.4847457627118643) internal successors, (1314), 997 states have internal predecessors, (1314), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 21:33:54,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:33:56,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:33:56,198 INFO L93 Difference]: Finished difference Result 3778 states and 5544 transitions. [2022-10-15 21:33:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:33:56,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2022-10-15 21:33:56,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:33:56,297 INFO L225 Difference]: With dead ends: 3778 [2022-10-15 21:33:56,297 INFO L226 Difference]: Without dead ends: 2509 [2022-10-15 21:33:56,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 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 21:33:56,325 INFO L413 NwaCegarLoop]: 1943 mSDtfsCounter, 2412 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 1416 mSolverCounterSat, 636 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 1416 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-10-15 21:33:56,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 3810 Invalid, 2053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [636 Valid, 1416 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-10-15 21:33:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-10-15 21:33:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2275. [2022-10-15 21:33:56,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1692 states have (on average 1.450354609929078) internal successors, (2454), 1798 states have internal predecessors, (2454), 426 states have call successors, (426), 99 states have call predecessors, (426), 99 states have return successors, (426), 422 states have call predecessors, (426), 426 states have call successors, (426) [2022-10-15 21:33:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3306 transitions. [2022-10-15 21:33:56,686 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3306 transitions. Word has length 58 [2022-10-15 21:33:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:33:56,687 INFO L495 AbstractCegarLoop]: Abstraction has 2275 states and 3306 transitions. [2022-10-15 21:33:56,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-10-15 21:33:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3306 transitions. [2022-10-15 21:33:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-15 21:33:56,702 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:33:56,702 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:56,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 21:33:56,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting sl_change_mtuErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [sl_tx_timeoutErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_tx_timeoutErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_ioctlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-10-15 21:33:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:33:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1146928676, now seen corresponding path program 1 times [2022-10-15 21:33:56,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:33:56,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461266853] [2022-10-15 21:33:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:33:56,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:33:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:33:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:33:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:33:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:33:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:33:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:33:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:33:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-10-15 21:33:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:33:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-15 21:33:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:33:56,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461266853] [2022-10-15 21:33:56,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461266853] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:33:56,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:33:56,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-15 21:33:56,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357261408] [2022-10-15 21:33:56,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:33:56,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-15 21:33:56,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:33:56,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-15 21:33:56,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-15 21:33:56,983 INFO L87 Difference]: Start difference. First operand 2275 states and 3306 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:34:01,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:34:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:34:03,600 INFO L93 Difference]: Finished difference Result 6506 states and 9490 transitions. [2022-10-15 21:34:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:34:03,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-10-15 21:34:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:34:03,640 INFO L225 Difference]: With dead ends: 6506 [2022-10-15 21:34:03,640 INFO L226 Difference]: Without dead ends: 4248 [2022-10-15 21:34:03,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 21:34:03,657 INFO L413 NwaCegarLoop]: 2013 mSDtfsCounter, 1981 mSDsluCounter, 1832 mSDsCounter, 0 mSdLazyCounter, 1436 mSolverCounterSat, 505 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 1436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-10-15 21:34:03,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 3845 Invalid, 1942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [505 Valid, 1436 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2022-10-15 21:34:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2022-10-15 21:34:03,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 3950. [2022-10-15 21:34:03,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3950 states, 2982 states have (on average 1.4446680080482897) internal successors, (4308), 3130 states have internal predecessors, (4308), 724 states have call successors, (724), 186 states have call predecessors, (724), 186 states have return successors, (724), 715 states have call predecessors, (724), 724 states have call successors, (724) [2022-10-15 21:34:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 5756 transitions. [2022-10-15 21:34:03,912 INFO L78 Accepts]: Start accepts. Automaton has 3950 states and 5756 transitions. Word has length 62 [2022-10-15 21:34:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:34:03,913 INFO L495 AbstractCegarLoop]: Abstraction has 3950 states and 5756 transitions. [2022-10-15 21:34:03,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:34:03,913 INFO L276 IsEmpty]: Start isEmpty. Operand 3950 states and 5756 transitions. [2022-10-15 21:34:03,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-15 21:34:03,915 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:34:03,916 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:34:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 21:34:03,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [sl_tx_timeoutErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_tx_timeoutErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_ioctlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-10-15 21:34:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:34:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1614752689, now seen corresponding path program 1 times [2022-10-15 21:34:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:34:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742427500] [2022-10-15 21:34:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:34:03,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:34:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:34:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:34:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:34:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:34:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:34:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:34:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:34:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 21:34:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-10-15 21:34:04,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:34:04,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742427500] [2022-10-15 21:34:04,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742427500] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:34:04,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:34:04,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:34:04,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963942567] [2022-10-15 21:34:04,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:34:04,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:34:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:34:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:34:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:34:04,227 INFO L87 Difference]: Start difference. First operand 3950 states and 5756 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:34:08,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:34:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:34:11,376 INFO L93 Difference]: Finished difference Result 10309 states and 14975 transitions. [2022-10-15 21:34:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 21:34:11,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-10-15 21:34:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:34:11,428 INFO L225 Difference]: With dead ends: 10309 [2022-10-15 21:34:11,428 INFO L226 Difference]: Without dead ends: 6376 [2022-10-15 21:34:11,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-15 21:34:11,451 INFO L413 NwaCegarLoop]: 2127 mSDtfsCounter, 2169 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 972 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 4427 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 972 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-10-15 21:34:11,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 4427 Invalid, 3335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [972 Valid, 2362 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-10-15 21:34:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6376 states. [2022-10-15 21:34:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6376 to 5654. [2022-10-15 21:34:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 4239 states have (on average 1.4217975937721161) internal successors, (6027), 4415 states have internal predecessors, (6027), 1053 states have call successors, (1053), 306 states have call predecessors, (1053), 304 states have return successors, (1053), 1038 states have call predecessors, (1053), 1053 states have call successors, (1053) [2022-10-15 21:34:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 8133 transitions. [2022-10-15 21:34:11,951 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 8133 transitions. Word has length 65 [2022-10-15 21:34:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:34:11,953 INFO L495 AbstractCegarLoop]: Abstraction has 5654 states and 8133 transitions. [2022-10-15 21:34:11,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-15 21:34:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 8133 transitions. [2022-10-15 21:34:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-15 21:34:11,959 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:34:11,960 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:34:11,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 21:34:11,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [sl_tx_timeoutErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_tx_timeoutErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_ioctlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-10-15 21:34:11,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:34:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash 188140420, now seen corresponding path program 1 times [2022-10-15 21:34:11,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:34:11,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574376305] [2022-10-15 21:34:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:34:11,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:34:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:34:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:34:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:34:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:34:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:34:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:34:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:34:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 21:34:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:34:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-15 21:34:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-15 21:34:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:12,346 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-15 21:34:12,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:34:12,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574376305] [2022-10-15 21:34:12,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574376305] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:34:12,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:34:12,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-15 21:34:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195620957] [2022-10-15 21:34:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:34:12,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-15 21:34:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:34:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-15 21:34:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 21:34:12,349 INFO L87 Difference]: Start difference. First operand 5654 states and 8133 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-15 21:34:15,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:34:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:34:16,215 INFO L93 Difference]: Finished difference Result 11824 states and 17129 transitions. [2022-10-15 21:34:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 21:34:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-10-15 21:34:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:34:16,267 INFO L225 Difference]: With dead ends: 11824 [2022-10-15 21:34:16,267 INFO L226 Difference]: Without dead ends: 6198 [2022-10-15 21:34:16,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:34:16,296 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 2516 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-10-15 21:34:16,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2653 Valid, 2369 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [835 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-10-15 21:34:16,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6198 states. [2022-10-15 21:34:16,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6198 to 5654. [2022-10-15 21:34:16,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 4239 states have (on average 1.4208539749941025) internal successors, (6023), 4415 states have internal predecessors, (6023), 1053 states have call successors, (1053), 306 states have call predecessors, (1053), 304 states have return successors, (1053), 1038 states have call predecessors, (1053), 1053 states have call successors, (1053) [2022-10-15 21:34:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 8129 transitions. [2022-10-15 21:34:16,711 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 8129 transitions. Word has length 99 [2022-10-15 21:34:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:34:16,712 INFO L495 AbstractCegarLoop]: Abstraction has 5654 states and 8129 transitions. [2022-10-15 21:34:16,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-15 21:34:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 8129 transitions. [2022-10-15 21:34:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-15 21:34:16,715 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:34:16,716 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:34:16,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 21:34:16,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [sl_tx_timeoutErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_tx_timeoutErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_ioctlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-10-15 21:34:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:34:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2116413122, now seen corresponding path program 1 times [2022-10-15 21:34:16,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:34:16,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204791433] [2022-10-15 21:34:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:34:16,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:34:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:34:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:16,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:34:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:34:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:34:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:34:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:34:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:34:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 21:34:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:34:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-15 21:34:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-15 21:34:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-10-15 21:34:17,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:34:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204791433] [2022-10-15 21:34:17,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204791433] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:34:17,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:34:17,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:34:17,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014729857] [2022-10-15 21:34:17,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:34:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:34:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:34:17,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:34:17,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:34:17,072 INFO L87 Difference]: Start difference. First operand 5654 states and 8129 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 21:34:19,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:34:21,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:34:26,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-15 21:34:29,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 21:34:29,048 INFO L93 Difference]: Finished difference Result 11832 states and 17129 transitions. [2022-10-15 21:34:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 21:34:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-10-15 21:34:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 21:34:29,094 INFO L225 Difference]: With dead ends: 11832 [2022-10-15 21:34:29,094 INFO L226 Difference]: Without dead ends: 6198 [2022-10-15 21:34:29,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-15 21:34:29,117 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 593 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 262 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 5110 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-10-15 21:34:29,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 5110 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2293 Invalid, 3 Unknown, 0 Unchecked, 11.6s Time] [2022-10-15 21:34:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6198 states. [2022-10-15 21:34:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6198 to 5654. [2022-10-15 21:34:29,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 4239 states have (on average 1.4199103562160886) internal successors, (6019), 4415 states have internal predecessors, (6019), 1053 states have call successors, (1053), 306 states have call predecessors, (1053), 304 states have return successors, (1053), 1038 states have call predecessors, (1053), 1053 states have call successors, (1053) [2022-10-15 21:34:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 8125 transitions. [2022-10-15 21:34:29,527 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 8125 transitions. Word has length 99 [2022-10-15 21:34:29,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 21:34:29,528 INFO L495 AbstractCegarLoop]: Abstraction has 5654 states and 8125 transitions. [2022-10-15 21:34:29,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 21:34:29,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 8125 transitions. [2022-10-15 21:34:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-15 21:34:29,540 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 21:34:29,540 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 21:34:29,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 21:34:29,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [sl_tx_timeoutErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_tx_timeoutErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, sl_ioctlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-10-15 21:34:29,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 21:34:29,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1852527700, now seen corresponding path program 1 times [2022-10-15 21:34:29,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 21:34:29,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575303290] [2022-10-15 21:34:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 21:34:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 21:34:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-15 21:34:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-15 21:34:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-15 21:34:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-10-15 21:34:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-15 21:34:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-15 21:34:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-15 21:34:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-10-15 21:34:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-15 21:34:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-10-15 21:34:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-10-15 21:34:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 21:34:30,000 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-10-15 21:34:30,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 21:34:30,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575303290] [2022-10-15 21:34:30,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575303290] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 21:34:30,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 21:34:30,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 21:34:30,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182237089] [2022-10-15 21:34:30,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 21:34:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 21:34:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 21:34:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 21:34:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-15 21:34:30,003 INFO L87 Difference]: Start difference. First operand 5654 states and 8125 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-15 21:34:32,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []