/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:00:14,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:00:14,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:00:14,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:00:14,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:00:15,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:00:15,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:00:15,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:00:15,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:00:15,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:00:15,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:00:15,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:00:15,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:00:15,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:00:15,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:00:15,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:00:15,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:00:15,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:00:15,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:00:15,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:00:15,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:00:15,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:00:15,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:00:15,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:00:15,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:00:15,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:00:15,065 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:00:15,066 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:00:15,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:00:15,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:00:15,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:00:15,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:00:15,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:00:15,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:00:15,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:00:15,079 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:00:15,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:00:15,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:00:15,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:00:15,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:00:15,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:00:15,084 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 [2020-09-21 11:00:15,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:00:15,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:00:15,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:00:15,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:00:15,132 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:00:15,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:00:15,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:00:15,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:00:15,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:00:15,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:00:15,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:00:15,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:00:15,135 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:00:15,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:00:15,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:00:15,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:00:15,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:00:15,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:00:15,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:00:15,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:00:15,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:00:15,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:00:15,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:00:15,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:00:15,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:00:15,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:00:15,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 11:00:15,139 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 -> false [2020-09-21 11:00:15,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:00:15,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:00:15,640 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:00:15,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:00:15,642 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:00:15,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 11:00:15,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a658459/f4a568047bdb430bbc2c1cb91cea5117/FLAG1f9241d64 [2020-09-21 11:00:16,710 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:00:16,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 11:00:16,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a658459/f4a568047bdb430bbc2c1cb91cea5117/FLAG1f9241d64 [2020-09-21 11:00:17,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a658459/f4a568047bdb430bbc2c1cb91cea5117 [2020-09-21 11:00:17,169 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:00:17,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:00:17,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:00:17,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:00:17,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:00:17,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:00:17" (1/1) ... [2020-09-21 11:00:17,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fff13d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:17, skipping insertion in model container [2020-09-21 11:00:17,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:00:17" (1/1) ... [2020-09-21 11:00:17,195 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:00:17,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:00:19,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:00:19,040 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:00:19,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:00:19,437 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:00:19,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19 WrapperNode [2020-09-21 11:00:19,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:00:19,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:00:19,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:00:19,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:00:19,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (1/1) ... [2020-09-21 11:00:19,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (1/1) ... [2020-09-21 11:00:19,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (1/1) ... [2020-09-21 11:00:19,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (1/1) ... [2020-09-21 11:00:19,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (1/1) ... [2020-09-21 11:00:19,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (1/1) ... [2020-09-21 11:00:19,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (1/1) ... [2020-09-21 11:00:19,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:00:19,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:00:19,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:00:19,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:00:19,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (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 [2020-09-21 11:00:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:00:19,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:00:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-09-21 11:00:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-09-21 11:00:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-09-21 11:00:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-09-21 11:00:19,751 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-09-21 11:00:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-09-21 11:00:19,752 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-09-21 11:00:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-09-21 11:00:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-09-21 11:00:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-21 11:00:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:00:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 11:00:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 11:00:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 11:00:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 11:00:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 11:00:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 11:00:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 11:00:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 11:00:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-09-21 11:00:19,755 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-09-21 11:00:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-09-21 11:00:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-09-21 11:00:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-09-21 11:00:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-09-21 11:00:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-09-21 11:00:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-09-21 11:00:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-09-21 11:00:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-09-21 11:00:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-09-21 11:00:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-09-21 11:00:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-09-21 11:00:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-09-21 11:00:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-09-21 11:00:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-09-21 11:00:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-09-21 11:00:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-09-21 11:00:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:00:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-09-21 11:00:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-09-21 11:00:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-09-21 11:00:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-09-21 11:00:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-09-21 11:00:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2020-09-21 11:00:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_13 [2020-09-21 11:00:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_14 [2020-09-21 11:00:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-09-21 11:00:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-09-21 11:00:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-09-21 11:00:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-09-21 11:00:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-09-21 11:00:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-21 11:00:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-21 11:00:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-21 11:00:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-21 11:00:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-09-21 11:00:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 11:00:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-09-21 11:00:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-09-21 11:00:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-09-21 11:00:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-09-21 11:00:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-09-21 11:00:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 11:00:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-09-21 11:00:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-09-21 11:00:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-09-21 11:00:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-09-21 11:00:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-09-21 11:00:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-09-21 11:00:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-09-21 11:00:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-09-21 11:00:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-09-21 11:00:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-09-21 11:00:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-09-21 11:00:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-09-21 11:00:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-09-21 11:00:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-09-21 11:00:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-09-21 11:00:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 11:00:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 11:00:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-09-21 11:00:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:00:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 11:00:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-09-21 11:00:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-09-21 11:00:19,768 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-09-21 11:00:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-09-21 11:00:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-09-21 11:00:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-09-21 11:00:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-09-21 11:00:19,769 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-21 11:00:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-09-21 11:00:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-09-21 11:00:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-09-21 11:00:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-09-21 11:00:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-09-21 11:00:19,770 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-09-21 11:00:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 11:00:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 11:00:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-09-21 11:00:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-09-21 11:00:19,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 11:00:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-21 11:00:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-09-21 11:00:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-09-21 11:00:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-09-21 11:00:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-09-21 11:00:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-09-21 11:00:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-09-21 11:00:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:00:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:00:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:00:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 11:00:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:00:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:00:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:00:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 11:00:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 11:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 11:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 11:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 11:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 11:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-09-21 11:00:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-09-21 11:00:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-09-21 11:00:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-09-21 11:00:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-09-21 11:00:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-09-21 11:00:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-09-21 11:00:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2020-09-21 11:00:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-09-21 11:00:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_13 [2020-09-21 11:00:19,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_14 [2020-09-21 11:00:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-09-21 11:00:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-09-21 11:00:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-09-21 11:00:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-09-21 11:00:19,778 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-09-21 11:00:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-09-21 11:00:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-09-21 11:00:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-09-21 11:00:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-09-21 11:00:19,779 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-09-21 11:00:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-09-21 11:00:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-09-21 11:00:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-09-21 11:00:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-09-21 11:00:19,780 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-09-21 11:00:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-09-21 11:00:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-09-21 11:00:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:00:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:00:19,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:00:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:00:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:00:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:00:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-09-21 11:00:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-09-21 11:00:19,782 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-09-21 11:00:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 11:00:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 11:00:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:00:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-09-21 11:00:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-09-21 11:00:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-09-21 11:00:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-09-21 11:00:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-09-21 11:00:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-21 11:00:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-21 11:00:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-21 11:00:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-21 11:00:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-09-21 11:00:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-09-21 11:00:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-09-21 11:00:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-09-21 11:00:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-09-21 11:00:19,785 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:00:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:00:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:00:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:00:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-21 11:00:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-21 11:00:19,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-21 11:00:19,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-21 11:00:20,465 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 11:00:24,320 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:00:24,320 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 11:00:24,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:00:24 BoogieIcfgContainer [2020-09-21 11:00:24,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:00:24,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:00:24,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:00:24,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:00:24,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:00:17" (1/3) ... [2020-09-21 11:00:24,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a149651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:00:24, skipping insertion in model container [2020-09-21 11:00:24,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:19" (2/3) ... [2020-09-21 11:00:24,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a149651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:00:24, skipping insertion in model container [2020-09-21 11:00:24,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:00:24" (3/3) ... [2020-09-21 11:00:24,341 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 11:00:24,353 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:00:24,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:00:24,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:00:24,424 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:00:24,425 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:00:24,425 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:00:24,425 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:00:24,425 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:00:24,425 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:00:24,425 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:00:24,426 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:00:24,462 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states. [2020-09-21 11:00:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:00:24,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:24,475 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] [2020-09-21 11:00:24,475 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:24,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash -337560205, now seen corresponding path program 1 times [2020-09-21 11:00:24,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:24,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324942108] [2020-09-21 11:00:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:27,031 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification that was a NOOP. DAG size: 526 [2020-09-21 11:00:27,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:27,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:27,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 11:00:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:27,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:00:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:00:27,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324942108] [2020-09-21 11:00:27,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:00:27,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:00:27,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247933071] [2020-09-21 11:00:27,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:00:27,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:27,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:00:27,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:00:27,343 INFO L87 Difference]: Start difference. First operand 624 states. Second operand 6 states. [2020-09-21 11:00:35,590 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification that was a NOOP. DAG size: 528 [2020-09-21 11:00:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:00:48,166 INFO L93 Difference]: Finished difference Result 1420 states and 2070 transitions. [2020-09-21 11:00:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:00:48,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-21 11:00:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:00:48,198 INFO L225 Difference]: With dead ends: 1420 [2020-09-21 11:00:48,199 INFO L226 Difference]: Without dead ends: 864 [2020-09-21 11:00:48,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:00:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-09-21 11:00:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 600. [2020-09-21 11:00:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-09-21 11:00:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 822 transitions. [2020-09-21 11:00:48,444 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 822 transitions. Word has length 36 [2020-09-21 11:00:48,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:00:48,445 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 822 transitions. [2020-09-21 11:00:48,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:00:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 822 transitions. [2020-09-21 11:00:48,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-21 11:00:48,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:48,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:00:48,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:00:48,450 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:48,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:48,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1418341137, now seen corresponding path program 1 times [2020-09-21 11:00:48,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:48,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593996651] [2020-09-21 11:00:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,431 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 526 [2020-09-21 11:00:50,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:00:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:00:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:00:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:00:50,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593996651] [2020-09-21 11:00:50,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:00:50,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 11:00:50,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135201378] [2020-09-21 11:00:50,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:00:50,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:00:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:00:50,896 INFO L87 Difference]: Start difference. First operand 600 states and 822 transitions. Second operand 8 states. [2020-09-21 11:00:52,593 WARN L193 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 529 [2020-09-21 11:00:58,087 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification that was a NOOP. DAG size: 531 [2020-09-21 11:01:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:01:12,170 INFO L93 Difference]: Finished difference Result 1312 states and 1821 transitions. [2020-09-21 11:01:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:01:12,171 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-09-21 11:01:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:01:12,178 INFO L225 Difference]: With dead ends: 1312 [2020-09-21 11:01:12,179 INFO L226 Difference]: Without dead ends: 726 [2020-09-21 11:01:12,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:01:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-09-21 11:01:12,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 600. [2020-09-21 11:01:12,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-09-21 11:01:12,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 820 transitions. [2020-09-21 11:01:12,340 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 820 transitions. Word has length 48 [2020-09-21 11:01:12,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:01:12,340 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 820 transitions. [2020-09-21 11:01:12,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:01:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 820 transitions. [2020-09-21 11:01:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-21 11:01:12,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:01:12,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:01:12,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:01:12,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:01:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:01:12,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1356301523, now seen corresponding path program 1 times [2020-09-21 11:01:12,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:01:12,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417573958] [2020-09-21 11:01:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:01:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:14,288 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 526 [2020-09-21 11:01:14,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:01:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:01:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:14,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:01:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 11:01:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:01:14,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417573958] [2020-09-21 11:01:14,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:01:14,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:01:14,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643616330] [2020-09-21 11:01:14,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:01:14,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:01:14,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:01:14,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:01:14,760 INFO L87 Difference]: Start difference. First operand 600 states and 820 transitions. Second operand 7 states. [2020-09-21 11:01:16,414 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 529