/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 16:15:38,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:15:38,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:15:38,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:15:38,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:15:38,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:15:38,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:15:38,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:15:38,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:15:38,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:15:38,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:15:38,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:15:38,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:15:38,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:15:38,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:15:38,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:15:38,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:15:38,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:15:38,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:15:38,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:15:38,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:15:38,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:15:38,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:15:38,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:15:38,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:15:38,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:15:38,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:15:38,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:15:38,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:15:38,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:15:38,531 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:15:38,532 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:15:38,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:15:38,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:15:38,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:15:38,535 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:15:38,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:15:38,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:15:38,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:15:38,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:15:38,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:15:38,539 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 [2020-08-21 16:15:38,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:15:38,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:15:38,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:15:38,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:15:38,589 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:15:38,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:15:38,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:15:38,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:15:38,590 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:15:38,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:15:38,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:15:38,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:15:38,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:15:38,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:15:38,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:15:38,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:15:38,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:15:38,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:15:38,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:15:38,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:15:38,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:15:38,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:15:38,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:15:38,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:15:38,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:15:38,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:15:38,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 16:15:38,595 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=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:15:38,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:15:38,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:15:38,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:15:38,911 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:15:38,912 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:15:38,913 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 16:15:38,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a80f925/0fdeb242a47d4f359ceb22931a2f4526/FLAGabb0be4c9 [2020-08-21 16:15:39,780 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:15:39,780 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 16:15:39,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a80f925/0fdeb242a47d4f359ceb22931a2f4526/FLAGabb0be4c9 [2020-08-21 16:15:39,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24a80f925/0fdeb242a47d4f359ceb22931a2f4526 [2020-08-21 16:15:39,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:15:39,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:15:39,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:15:39,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:15:39,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:15:39,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:15:39" (1/1) ... [2020-08-21 16:15:39,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d088d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:39, skipping insertion in model container [2020-08-21 16:15:39,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:15:39" (1/1) ... [2020-08-21 16:15:39,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:15:39,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:15:41,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:15:41,349 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:15:41,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:15:41,634 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:15:41,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41 WrapperNode [2020-08-21 16:15:41,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:15:41,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:15:41,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:15:41,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:15:41,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (1/1) ... [2020-08-21 16:15:41,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (1/1) ... [2020-08-21 16:15:41,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (1/1) ... [2020-08-21 16:15:41,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (1/1) ... [2020-08-21 16:15:41,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (1/1) ... [2020-08-21 16:15:41,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (1/1) ... [2020-08-21 16:15:41,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (1/1) ... [2020-08-21 16:15:41,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:15:41,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:15:41,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:15:41,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:15:41,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (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 [2020-08-21 16:15:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:15:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:15:41,895 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-21 16:15:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-21 16:15:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-21 16:15:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-21 16:15:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-21 16:15:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 16:15:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 16:15:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-21 16:15:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-21 16:15:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 16:15:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 16:15:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 16:15:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 16:15:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-21 16:15:41,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-21 16:15:41,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 16:15:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 16:15:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 16:15:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-21 16:15:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 16:15:41,904 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-21 16:15:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-21 16:15:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-21 16:15:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-21 16:15:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-21 16:15:41,905 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-21 16:15:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-21 16:15:41,906 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-21 16:15:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-21 16:15:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-21 16:15:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-21 16:15:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-21 16:15:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-21 16:15:41,907 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-21 16:15:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-21 16:15:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-21 16:15:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:15:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-08-21 16:15:41,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-08-21 16:15:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-08-21 16:15:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 16:15:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 16:15:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 16:15:41,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 16:15:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 16:15:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-08-21 16:15:41,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-08-21 16:15:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-08-21 16:15:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-08-21 16:15:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-08-21 16:15:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 16:15:41,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-21 16:15:41,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 16:15:41,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 16:15:41,914 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-21 16:15:41,914 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-21 16:15:41,914 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-21 16:15:41,915 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-21 16:15:41,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-21 16:15:41,915 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-21 16:15:41,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 16:15:41,915 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 16:15:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-21 16:15:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-21 16:15:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-21 16:15:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-21 16:15:41,916 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-21 16:15:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 16:15:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 16:15:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 16:15:41,917 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-21 16:15:41,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:15:41,919 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 16:15:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-21 16:15:41,920 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 16:15:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 16:15:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 16:15:41,922 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-21 16:15:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-21 16:15:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-21 16:15:41,923 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-21 16:15:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-21 16:15:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-21 16:15:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-21 16:15:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-21 16:15:41,924 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 16:15:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 16:15:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 16:15:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 16:15:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-21 16:15:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-21 16:15:41,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 16:15:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 16:15:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:15:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 16:15:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:15:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 16:15:41,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 16:15:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 16:15:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:15:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 16:15:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-21 16:15:41,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-21 16:15:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 16:15:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 16:15:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 16:15:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 16:15:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-21 16:15:41,928 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-21 16:15:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-21 16:15:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-21 16:15:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-21 16:15:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-21 16:15:41,929 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-21 16:15:41,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-08-21 16:15:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-21 16:15:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-08-21 16:15:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-08-21 16:15:41,931 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-21 16:15:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-21 16:15:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-21 16:15:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 16:15:41,933 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-21 16:15:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-21 16:15:41,934 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-21 16:15:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-21 16:15:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-21 16:15:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-21 16:15:41,935 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-21 16:15:41,936 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-21 16:15:41,937 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-21 16:15:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-21 16:15:41,940 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-21 16:15:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-21 16:15:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-21 16:15:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:15:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:15:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:15:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:15:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:15:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:15:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-21 16:15:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-21 16:15:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-21 16:15:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 16:15:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 16:15:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:15:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 16:15:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 16:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 16:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 16:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 16:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-08-21 16:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-08-21 16:15:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-08-21 16:15:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-08-21 16:15:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-08-21 16:15:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:15:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:15:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:15:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:15:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-21 16:15:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-21 16:15:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-21 16:15:41,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-21 16:15:42,706 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 16:15:42,712 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-08-21 16:15:45,922 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:15:45,922 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 16:15:45,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:15:45 BoogieIcfgContainer [2020-08-21 16:15:45,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:15:45,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:15:45,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:15:45,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:15:45,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:15:39" (1/3) ... [2020-08-21 16:15:45,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d39e59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:15:45, skipping insertion in model container [2020-08-21 16:15:45,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:15:41" (2/3) ... [2020-08-21 16:15:45,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d39e59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:15:45, skipping insertion in model container [2020-08-21 16:15:45,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:15:45" (3/3) ... [2020-08-21 16:15:45,949 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 16:15:45,965 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:15:45,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:15:45,999 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:15:46,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:15:46,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:15:46,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:15:46,047 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:15:46,047 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:15:46,047 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:15:46,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:15:46,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:15:46,103 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-08-21 16:15:46,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:15:46,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:15:46,124 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] [2020-08-21 16:15:46,125 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:15:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:15:46,131 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-08-21 16:15:46,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:15:46,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040967896] [2020-08-21 16:15:46,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:15:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:48,303 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 16:15:48,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:15:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:15:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:48,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 16:15:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:15:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:15:48,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040967896] [2020-08-21 16:15:48,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:15:48,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:15:48,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67063284] [2020-08-21 16:15:48,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:15:48,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:15:48,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:15:48,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:15:48,477 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-08-21 16:15:50,256 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 516 [2020-08-21 16:16:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:16:00,661 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-08-21 16:16:00,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:16:00,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-21 16:16:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:16:00,690 INFO L225 Difference]: With dead ends: 1404 [2020-08-21 16:16:00,690 INFO L226 Difference]: Without dead ends: 854 [2020-08-21 16:16:00,703 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 [2020-08-21 16:16:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-21 16:16:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-08-21 16:16:00,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-21 16:16:00,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-08-21 16:16:00,924 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-08-21 16:16:00,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:16:00,925 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-08-21 16:16:00,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:16:00,925 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-08-21 16:16:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 16:16:00,929 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:16:00,929 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] [2020-08-21 16:16:00,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:16:00,930 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:16:00,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:16:00,930 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-08-21 16:16:00,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:16:00,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250097473] [2020-08-21 16:16:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:16:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:02,304 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 16:16:02,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:16:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:16:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:02,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 16:16:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:16:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:16:02,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250097473] [2020-08-21 16:16:02,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:16:02,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:16:02,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230686417] [2020-08-21 16:16:02,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:16:02,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:16:02,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:16:02,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:16:02,639 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-08-21 16:16:03,846 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 16:16:09,886 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 16:16:19,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:16:19,451 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-08-21 16:16:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:16:19,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-21 16:16:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:16:19,461 INFO L225 Difference]: With dead ends: 1298 [2020-08-21 16:16:19,461 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 16:16:19,465 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 [2020-08-21 16:16:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 16:16:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 16:16:19,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 16:16:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-08-21 16:16:19,620 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-08-21 16:16:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:16:19,621 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-08-21 16:16:19,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:16:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-08-21 16:16:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 16:16:19,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:16:19,623 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] [2020-08-21 16:16:19,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:16:19,624 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:16:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:16:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-08-21 16:16:19,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:16:19,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719165047] [2020-08-21 16:16:19,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:16:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:20,985 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 16:16:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:16:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:16:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 16:16:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:21,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:16:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 16:16:21,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719165047] [2020-08-21 16:16:21,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:16:21,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:16:21,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153791567] [2020-08-21 16:16:21,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:16:21,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:16:21,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:16:21,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:16:21,343 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-08-21 16:16:22,501 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 16:16:24,618 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 16:16:34,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:16:34,987 INFO L93 Difference]: Finished difference Result 1300 states and 1805 transitions. [2020-08-21 16:16:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:16:34,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-21 16:16:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:16:34,994 INFO L225 Difference]: With dead ends: 1300 [2020-08-21 16:16:34,994 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 16:16:34,997 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 [2020-08-21 16:16:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 16:16:35,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 16:16:35,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 16:16:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 811 transitions. [2020-08-21 16:16:35,133 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 811 transitions. Word has length 40 [2020-08-21 16:16:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:16:35,133 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 811 transitions. [2020-08-21 16:16:35,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:16:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 811 transitions. [2020-08-21 16:16:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 16:16:35,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:16:35,136 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] [2020-08-21 16:16:35,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:16:35,137 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:16:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:16:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-08-21 16:16:35,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:16:35,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872195220] [2020-08-21 16:16:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:16:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,565 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 16:16:36,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:16:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:16:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 16:16:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:16:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 16:16:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:16:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:16:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 16:16:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:16:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:16:36,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872195220] [2020-08-21 16:16:36,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:16:36,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 16:16:36,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580321553] [2020-08-21 16:16:36,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:16:36,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:16:36,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:16:36,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:16:36,982 INFO L87 Difference]: Start difference. First operand 592 states and 811 transitions. Second operand 8 states. [2020-08-21 16:16:38,199 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 517