/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:40:18,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:40:18,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:40:18,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:40:18,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:40:18,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:40:18,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:40:18,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:40:18,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:40:18,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:40:18,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:40:18,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:40:18,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:40:18,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:40:18,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:40:18,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:40:18,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:40:18,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:40:18,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:40:18,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:40:18,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:40:18,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:40:18,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:40:18,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:40:18,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:40:18,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:40:18,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:40:18,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:40:18,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:40:18,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:40:18,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:40:18,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:40:18,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:40:18,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:40:18,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:40:18,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:40:18,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:40:18,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:40:18,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:40:18,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:40:18,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:40:18,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 12:40:18,167 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:40:18,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:40:18,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:40:18,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:40:18,169 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:40:18,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:40:18,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:40:18,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:40:18,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:40:18,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:40:18,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:40:18,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:40:18,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:40:18,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:40:18,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:40:18,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:40:18,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:40:18,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:40:18,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:40:18,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:40:18,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:40:18,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:40:18,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:40:18,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:40:18,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:40:18,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:40:18,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 12:40:18,173 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:40:18,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:40:18,508 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:40:18,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:40:18,513 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:40:18,514 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:40:18,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 12:40:18,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a394512d/f20a404e391841d8b57ace9f7a467074/FLAG8a0feb52f [2020-08-18 12:40:19,365 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:40:19,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 12:40:19,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a394512d/f20a404e391841d8b57ace9f7a467074/FLAG8a0feb52f [2020-08-18 12:40:19,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a394512d/f20a404e391841d8b57ace9f7a467074 [2020-08-18 12:40:19,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:40:19,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:40:19,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:40:19,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:40:19,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:40:19,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:40:19" (1/1) ... [2020-08-18 12:40:19,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4625cee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:19, skipping insertion in model container [2020-08-18 12:40:19,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:40:19" (1/1) ... [2020-08-18 12:40:19,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:40:20,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:40:21,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:40:21,260 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:40:21,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:40:21,586 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:40:21,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21 WrapperNode [2020-08-18 12:40:21,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:40:21,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:40:21,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:40:21,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:40:21,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... [2020-08-18 12:40:21,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... [2020-08-18 12:40:21,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... [2020-08-18 12:40:21,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... [2020-08-18 12:40:21,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... [2020-08-18 12:40:21,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... [2020-08-18 12:40:21,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... [2020-08-18 12:40:21,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:40:21,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:40:21,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:40:21,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:40:21,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:40:21,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:40:21,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:40:21,894 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-18 12:40:21,894 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-18 12:40:21,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-18 12:40:21,896 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-18 12:40:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-18 12:40:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 12:40:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 12:40:21,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 12:40:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 12:40:21,899 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 12:40:21,900 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:40:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 12:40:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 12:40:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-18 12:40:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-18 12:40:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 12:40:21,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 12:40:21,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 12:40:21,902 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-18 12:40:21,902 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 12:40:21,903 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-18 12:40:21,903 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-18 12:40:21,903 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-18 12:40:21,903 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-18 12:40:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-18 12:40:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-18 12:40:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-18 12:40:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-18 12:40:21,904 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-18 12:40:21,905 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-18 12:40:21,905 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-18 12:40:21,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-18 12:40:21,905 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-18 12:40:21,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-18 12:40:21,905 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 12:40:21,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 12:40:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-18 12:40:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-18 12:40:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-18 12:40:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-18 12:40:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-18 12:40:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-18 12:40:21,908 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-18 12:40:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-18 12:40:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-18 12:40:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 12:40:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 12:40:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 12:40:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-18 12:40:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:40:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 12:40:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-18 12:40:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 12:40:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-18 12:40:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-18 12:40:21,912 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-18 12:40:21,912 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-18 12:40:21,912 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-18 12:40:21,912 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-18 12:40:21,912 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-18 12:40:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-18 12:40:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-18 12:40:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-18 12:40:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 12:40:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 12:40:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 12:40:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 12:40:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 12:40:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 12:40:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 12:40:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 12:40:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-18 12:40:21,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-18 12:40:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-18 12:40:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-18 12:40:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-18 12:40:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-18 12:40:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-08-18 12:40:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-18 12:40:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-08-18 12:40:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-08-18 12:40:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-18 12:40:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-18 12:40:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-18 12:40:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 12:40:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-18 12:40:21,918 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-18 12:40:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-18 12:40:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-18 12:40:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-18 12:40:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-18 12:40:21,919 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-18 12:40:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-18 12:40:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-18 12:40:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-18 12:40:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-18 12:40:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-18 12:40:21,920 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-18 12:40:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:40:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:40:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:40:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:40:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:40:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:40:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-18 12:40:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-18 12:40:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-18 12:40:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 12:40:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 12:40:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:40:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 12:40:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 12:40:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 12:40:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 12:40:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 12:40:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-08-18 12:40:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-08-18 12:40:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-08-18 12:40:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-08-18 12:40:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-08-18 12:40:21,924 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:40:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:40:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:40:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:40:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 12:40:21,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 12:40:21,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 12:40:21,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 12:40:22,682 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 12:40:22,688 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-08-18 12:40:25,666 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:40:25,667 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 12:40:25,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:40:25 BoogieIcfgContainer [2020-08-18 12:40:25,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:40:25,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:40:25,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:40:25,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:40:25,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:40:19" (1/3) ... [2020-08-18 12:40:25,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55795531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:40:25, skipping insertion in model container [2020-08-18 12:40:25,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:40:21" (2/3) ... [2020-08-18 12:40:25,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55795531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:40:25, skipping insertion in model container [2020-08-18 12:40:25,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:40:25" (3/3) ... [2020-08-18 12:40:25,686 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 12:40:25,697 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:40:25,706 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:40:25,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:40:25,747 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:40:25,747 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:40:25,747 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:40:25,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:40:25,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:40:25,748 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:40:25,748 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:40:25,748 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:40:25,780 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-08-18 12:40:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 12:40:25,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:25,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:40:25,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:25,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:25,797 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-08-18 12:40:25,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:25,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543787146] [2020-08-18 12:40:25,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:27,804 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-18 12:40:27,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:40:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:40:28,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543787146] [2020-08-18 12:40:28,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:40:28,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:40:28,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280201948] [2020-08-18 12:40:28,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:40:28,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:28,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:40:28,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:40:28,051 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-08-18 12:40:29,962 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 516 [2020-08-18 12:40:39,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:39,882 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-08-18 12:40:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:40:39,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-18 12:40:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:39,909 INFO L225 Difference]: With dead ends: 1404 [2020-08-18 12:40:39,909 INFO L226 Difference]: Without dead ends: 854 [2020-08-18 12:40:39,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:40:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-18 12:40:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-08-18 12:40:40,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-18 12:40:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-08-18 12:40:40,144 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-08-18 12:40:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:40,145 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-08-18 12:40:40,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:40:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-08-18 12:40:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-18 12:40:40,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:40,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:40:40,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:40:40,149 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:40,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:40,150 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-08-18 12:40:40,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:40,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436164511] [2020-08-18 12:40:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:41,618 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-18 12:40:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:40:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:41,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:40:41,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436164511] [2020-08-18 12:40:41,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:40:41,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:40:41,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957861097] [2020-08-18 12:40:41,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:40:41,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:41,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:40:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:40:41,936 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-08-18 12:40:43,152 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-18 12:40:46,446 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-18 12:40:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:55,894 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-08-18 12:40:55,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:40:55,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-18 12:40:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:55,909 INFO L225 Difference]: With dead ends: 1298 [2020-08-18 12:40:55,909 INFO L226 Difference]: Without dead ends: 718 [2020-08-18 12:40:55,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:40:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-18 12:40:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-18 12:40:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-18 12:40:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-08-18 12:40:56,070 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-08-18 12:40:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:56,070 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-08-18 12:40:56,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:40:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-08-18 12:40:56,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 12:40:56,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:56,073 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:40:56,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:40:56,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-08-18 12:40:56,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:56,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813295049] [2020-08-18 12:40:56,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:57,434 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-18 12:40:57,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:57,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:57,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:40:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:57,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-18 12:40:57,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813295049] [2020-08-18 12:40:57,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:40:57,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 12:40:57,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618272213] [2020-08-18 12:40:57,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:40:57,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:57,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:40:57,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:40:57,777 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-08-18 12:40:58,979 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-18 12:41:00,873 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-18 12:41:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:41:10,946 INFO L93 Difference]: Finished difference Result 1300 states and 1805 transitions. [2020-08-18 12:41:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 12:41:10,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-18 12:41:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:41:10,954 INFO L225 Difference]: With dead ends: 1300 [2020-08-18 12:41:10,954 INFO L226 Difference]: Without dead ends: 718 [2020-08-18 12:41:10,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-18 12:41:10,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-18 12:41:11,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-18 12:41:11,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-18 12:41:11,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 811 transitions. [2020-08-18 12:41:11,097 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 811 transitions. Word has length 40 [2020-08-18 12:41:11,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:41:11,097 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 811 transitions. [2020-08-18 12:41:11,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:41:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 811 transitions. [2020-08-18 12:41:11,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 12:41:11,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:41:11,100 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 12:41:11,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:41:11,101 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:41:11,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:41:11,101 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-08-18 12:41:11,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:41:11,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824697644] [2020-08-18 12:41:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:41:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,416 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-18 12:41:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:41:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:41:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-18 12:41:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:41:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-18 12:41:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:41:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:41:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:41:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:41:12,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:41:12,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824697644] [2020-08-18 12:41:12,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:41:12,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 12:41:12,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698143202] [2020-08-18 12:41:12,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 12:41:12,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:41:12,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 12:41:12,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-18 12:41:12,923 INFO L87 Difference]: Start difference. First operand 592 states and 811 transitions. Second operand 8 states. [2020-08-18 12:41:14,125 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-18 12:41:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:41:21,432 INFO L93 Difference]: Finished difference Result 1350 states and 1885 transitions. [2020-08-18 12:41:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:41:21,432 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-08-18 12:41:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:41:21,439 INFO L225 Difference]: With dead ends: 1350 [2020-08-18 12:41:21,439 INFO L226 Difference]: Without dead ends: 768 [2020-08-18 12:41:21,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:41:21,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2020-08-18 12:41:21,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 594. [2020-08-18 12:41:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-08-18 12:41:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 813 transitions. [2020-08-18 12:41:21,562 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 813 transitions. Word has length 62 [2020-08-18 12:41:21,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:41:21,563 INFO L479 AbstractCegarLoop]: Abstraction has 594 states and 813 transitions. [2020-08-18 12:41:21,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 12:41:21,563 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 813 transitions. [2020-08-18 12:41:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 12:41:21,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:41:21,565 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:41:21,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:41:21,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:41:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:41:21,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2068084305, now seen corresponding path program 2 times [2020-08-18 12:41:21,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:41:21,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342693523] [2020-08-18 12:41:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:41:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat