/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 0.1.25-5644d1e-m [2020-08-18 11:02:46,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:02:46,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:02:46,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:02:46,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:02:46,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:02:46,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:02:46,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:02:46,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:02:46,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:02:46,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:02:46,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:02:46,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:02:46,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:02:46,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:02:46,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:02:46,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:02:46,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:02:46,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:02:46,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:02:46,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:02:46,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:02:46,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:02:46,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:02:46,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:02:46,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:02:46,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:02:46,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:02:46,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:02:46,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:02:46,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:02:46,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:02:46,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:02:46,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:02:46,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:02:46,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:02:46,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:02:46,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:02:46,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:02:46,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:02:46,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:02:46,888 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 11:02:46,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:02:46,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:02:46,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:02:46,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:02:46,912 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:02:46,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:02:46,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:02:46,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:02:46,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:02:46,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:02:46,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:02:46,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:02:46,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:02:46,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:02:46,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:02:46,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:02:46,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:02:46,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:02:46,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:02:46,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:02:46,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:02:46,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:02:46,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:02:46,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:02:46,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:02:46,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:02:46,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 11:02:46,916 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 [2020-08-18 11:02:47,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:02:47,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:02:47,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:02:47,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:02:47,281 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:02:47,282 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 11:02:47,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbdc52f5d/f52d6e45d84c4592a578c7762a0d2890/FLAG6dc40bffb [2020-08-18 11:02:48,115 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:02:48,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-18 11:02:48,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbdc52f5d/f52d6e45d84c4592a578c7762a0d2890/FLAG6dc40bffb [2020-08-18 11:02:48,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cbdc52f5d/f52d6e45d84c4592a578c7762a0d2890 [2020-08-18 11:02:48,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:02:48,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:02:48,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:02:48,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:02:48,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:02:48,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:02:48" (1/1) ... [2020-08-18 11:02:48,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612194b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:48, skipping insertion in model container [2020-08-18 11:02:48,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:02:48" (1/1) ... [2020-08-18 11:02:48,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:02:48,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:02:49,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:02:49,786 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:02:50,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:02:50,155 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:02:50,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50 WrapperNode [2020-08-18 11:02:50,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:02:50,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:02:50,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:02:50,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:02:50,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... [2020-08-18 11:02:50,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... [2020-08-18 11:02:50,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... [2020-08-18 11:02:50,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... [2020-08-18 11:02:50,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... [2020-08-18 11:02:50,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... [2020-08-18 11:02:50,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... [2020-08-18 11:02:50,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:02:50,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:02:50,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:02:50,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:02:50,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:02:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:02:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:02:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-18 11:02:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-18 11:02:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-18 11:02:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-18 11:02:50,469 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-18 11:02:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-18 11:02:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-18 11:02:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 11:02:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 11:02:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 11:02:50,475 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 11:02:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 11:02:50,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 11:02:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 11:02:50,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 11:02:50,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 11:02:50,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 11:02:50,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 11:02:50,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 11:02:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-18 11:02:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-18 11:02:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-18 11:02:50,488 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-18 11:02:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-18 11:02:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-18 11:02:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-18 11:02:50,489 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-18 11:02:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-18 11:02:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-18 11:02:50,490 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-18 11:02:50,491 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-18 11:02:50,491 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-18 11:02:50,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-18 11:02:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-18 11:02:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-18 11:02:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-18 11:02:50,492 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-18 11:02:50,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:02:50,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-18 11:02:50,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-18 11:02:50,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-18 11:02:50,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-18 11:02:50,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-18 11:02:50,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2020-08-18 11:02:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_13 [2020-08-18 11:02:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_14 [2020-08-18 11:02:50,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-18 11:02:50,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-18 11:02:50,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-18 11:02:50,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-18 11:02:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-18 11:02:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-18 11:02:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-18 11:02:50,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-18 11:02:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-18 11:02:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-18 11:02:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 11:02:50,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-18 11:02:50,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-18 11:02:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-18 11:02:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-18 11:02:50,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-18 11:02:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 11:02:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-18 11:02:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-18 11:02:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-18 11:02:50,501 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-18 11:02:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-18 11:02:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-18 11:02:50,502 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-18 11:02:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-18 11:02:50,503 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-18 11:02:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-18 11:02:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-18 11:02:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-18 11:02:50,505 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-18 11:02:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-18 11:02:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-18 11:02:50,506 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 11:02:50,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 11:02:50,508 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-18 11:02:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:02:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 11:02:50,509 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-18 11:02:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-18 11:02:50,511 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-18 11:02:50,511 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-18 11:02:50,511 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-18 11:02:50,512 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-18 11:02:50,512 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-18 11:02:50,512 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-18 11:02:50,512 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-18 11:02:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-18 11:02:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-18 11:02:50,513 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-18 11:02:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-18 11:02:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-18 11:02:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 11:02:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 11:02:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 11:02:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 11:02:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 11:02:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 11:02:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-18 11:02:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-18 11:02:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-18 11:02:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-18 11:02:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-18 11:02:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-18 11:02:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:02:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 11:02:50,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:02:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 11:02:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 11:02:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 11:02:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:02:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 11:02:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 11:02:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 11:02:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 11:02:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 11:02:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 11:02:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-18 11:02:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-18 11:02:50,523 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-18 11:02:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-18 11:02:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-18 11:02:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-18 11:02:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-18 11:02:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2020-08-18 11:02:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-18 11:02:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_13 [2020-08-18 11:02:50,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_14 [2020-08-18 11:02:50,527 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-18 11:02:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-18 11:02:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-18 11:02:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-18 11:02:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-18 11:02:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-18 11:02:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-18 11:02:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-18 11:02:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-18 11:02:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-18 11:02:50,541 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-18 11:02:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-18 11:02:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-18 11:02:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-18 11:02:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-18 11:02:50,542 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-18 11:02:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-18 11:02:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:02:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:02:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:02:50,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:02:50,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:02:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:02:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-18 11:02:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-18 11:02:50,545 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-18 11:02:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 11:02:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 11:02:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:02:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-18 11:02:50,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-18 11:02:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-18 11:02:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-18 11:02:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-18 11:02:50,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-18 11:02:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-18 11:02:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-18 11:02:50,548 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-18 11:02:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-18 11:02:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-18 11:02:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-18 11:02:50,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-18 11:02:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-18 11:02:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:02:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:02:50,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:02:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:02:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-18 11:02:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-18 11:02:50,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-18 11:02:50,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-18 11:02:51,715 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 11:02:55,288 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:02:55,289 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:02:55,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:02:55 BoogieIcfgContainer [2020-08-18 11:02:55,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:02:55,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:02:55,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:02:55,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:02:55,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:02:48" (1/3) ... [2020-08-18 11:02:55,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fd8782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:02:55, skipping insertion in model container [2020-08-18 11:02:55,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:02:50" (2/3) ... [2020-08-18 11:02:55,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fd8782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:02:55, skipping insertion in model container [2020-08-18 11:02:55,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:02:55" (3/3) ... [2020-08-18 11:02:55,313 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 [2020-08-18 11:02:55,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:02:55,335 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:02:55,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:02:55,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:02:55,385 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:02:55,385 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:02:55,385 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:02:55,385 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:02:55,386 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:02:55,386 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:02:55,386 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:02:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states. [2020-08-18 11:02:55,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 11:02:55,436 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:02:55,437 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] [2020-08-18 11:02:55,438 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:02:55,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:02:55,444 INFO L82 PathProgramCache]: Analyzing trace with hash -337560205, now seen corresponding path program 1 times [2020-08-18 11:02:55,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:02:55,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625831868] [2020-08-18 11:02:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:02:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,095 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-18 11:02:58,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:02:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:02:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:02:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-18 11:02:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:02:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:02:58,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:02:58,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625831868] [2020-08-18 11:02:58,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:02:58,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:02:58,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511784115] [2020-08-18 11:02:58,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:02:58,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:02:58,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:02:58,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:02:58,296 INFO L87 Difference]: Start difference. First operand 624 states. Second operand 6 states. [2020-08-18 11:03:02,077 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 528 [2020-08-18 11:03:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:14,274 INFO L93 Difference]: Finished difference Result 1420 states and 2070 transitions. [2020-08-18 11:03:14,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 11:03:14,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-08-18 11:03:14,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:14,300 INFO L225 Difference]: With dead ends: 1420 [2020-08-18 11:03:14,300 INFO L226 Difference]: Without dead ends: 864 [2020-08-18 11:03:14,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:03:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-18 11:03:14,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 600. [2020-08-18 11:03:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-18 11:03:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 822 transitions. [2020-08-18 11:03:14,530 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 822 transitions. Word has length 36 [2020-08-18 11:03:14,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:14,530 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 822 transitions. [2020-08-18 11:03:14,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:03:14,531 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 822 transitions. [2020-08-18 11:03:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 11:03:14,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:14,535 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] [2020-08-18 11:03:14,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:03:14,536 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1418341137, now seen corresponding path program 1 times [2020-08-18 11:03:14,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:14,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861419782] [2020-08-18 11:03:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:16,348 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-18 11:03:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:16,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:16,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:16,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:03:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:03:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:03:16,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861419782] [2020-08-18 11:03:16,785 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:16,785 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:03:16,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992940799] [2020-08-18 11:03:16,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:03:16,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:16,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:03:16,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:03:16,788 INFO L87 Difference]: Start difference. First operand 600 states and 822 transitions. Second operand 8 states. [2020-08-18 11:03:18,374 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 529 [2020-08-18 11:03:26,066 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 531 [2020-08-18 11:03:38,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:03:38,242 INFO L93 Difference]: Finished difference Result 1312 states and 1821 transitions. [2020-08-18 11:03:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:03:38,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-08-18 11:03:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:03:38,251 INFO L225 Difference]: With dead ends: 1312 [2020-08-18 11:03:38,251 INFO L226 Difference]: Without dead ends: 726 [2020-08-18 11:03:38,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-18 11:03:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-08-18 11:03:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 600. [2020-08-18 11:03:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-18 11:03:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 820 transitions. [2020-08-18 11:03:38,390 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 820 transitions. Word has length 48 [2020-08-18 11:03:38,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:03:38,391 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 820 transitions. [2020-08-18 11:03:38,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:03:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 820 transitions. [2020-08-18 11:03:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-18 11:03:38,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:03:38,394 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] [2020-08-18 11:03:38,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:03:38,394 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:03:38,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:03:38,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1356301523, now seen corresponding path program 1 times [2020-08-18 11:03:38,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:03:38,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112381939] [2020-08-18 11:03:38,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:03:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,074 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-18 11:03:40,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:03:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:03:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 11:03:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:03:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:03:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:03:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 11:03:40,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112381939] [2020-08-18 11:03:40,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:03:40,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:03:40,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733569556] [2020-08-18 11:03:40,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:03:40,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:03:40,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:03:40,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:03:40,422 INFO L87 Difference]: Start difference. First operand 600 states and 820 transitions. Second operand 7 states. [2020-08-18 11:03:41,949 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 529