/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 0.1.25-177f698 [2020-08-21 13:49:43,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:49:43,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:49:43,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:49:43,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:49:43,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:49:43,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:49:43,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:49:43,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:49:43,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:49:43,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:49:43,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:49:43,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:49:43,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:49:43,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:49:43,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:49:43,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:49:43,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:49:43,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:49:43,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:49:43,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:49:43,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:49:43,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:49:43,672 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:49:43,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:49:43,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:49:43,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:49:43,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:49:43,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:49:43,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:49:43,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:49:43,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:49:43,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:49:43,698 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:49:43,699 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:49:43,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:49:43,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:49:43,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:49:43,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:49:43,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:49:43,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:49:43,705 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 13:49:43,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:49:43,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:49:43,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:49:43,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:49:43,746 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:49:43,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:49:43,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:49:43,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:49:43,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:49:43,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:49:43,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:49:43,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:49:43,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:49:43,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:49:43,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:49:43,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:49:43,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:49:43,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:49:43,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:49:43,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:49:43,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:49:43,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:49:43,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:49:43,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:49:43,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:49:43,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:49:43,752 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 13:49:43,752 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 [2020-08-21 13:49:44,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:49:44,071 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:49:44,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:49:44,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:49:44,077 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:49:44,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 13:49:44,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee8f8903b/5efed0de7d6b40489ac1ae0ae55d6a19/FLAGf79cfee11 [2020-08-21 13:49:44,894 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:49:44,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 13:49:44,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee8f8903b/5efed0de7d6b40489ac1ae0ae55d6a19/FLAGf79cfee11 [2020-08-21 13:49:45,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee8f8903b/5efed0de7d6b40489ac1ae0ae55d6a19 [2020-08-21 13:49:45,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:49:45,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:49:45,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:49:45,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:49:45,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:49:45,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:49:45" (1/1) ... [2020-08-21 13:49:45,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4659d7d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:45, skipping insertion in model container [2020-08-21 13:49:45,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:49:45" (1/1) ... [2020-08-21 13:49:45,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:49:45,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:49:46,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:49:46,525 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:49:46,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:49:46,821 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:49:46,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46 WrapperNode [2020-08-21 13:49:46,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:49:46,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:49:46,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:49:46,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:49:46,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (1/1) ... [2020-08-21 13:49:46,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (1/1) ... [2020-08-21 13:49:46,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (1/1) ... [2020-08-21 13:49:46,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (1/1) ... [2020-08-21 13:49:46,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (1/1) ... [2020-08-21 13:49:47,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (1/1) ... [2020-08-21 13:49:47,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (1/1) ... [2020-08-21 13:49:47,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:49:47,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:49:47,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:49:47,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:49:47,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (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 13:49:47,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:49:47,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:49:47,127 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-21 13:49:47,127 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-21 13:49:47,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-21 13:49:47,127 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-21 13:49:47,128 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-21 13:49:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 13:49:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 13:49:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-21 13:49:47,129 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-21 13:49:47,130 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 13:49:47,130 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 13:49:47,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 13:49:47,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 13:49:47,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 13:49:47,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 13:49:47,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 13:49:47,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 13:49:47,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 13:49:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 13:49:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-21 13:49:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 13:49:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-21 13:49:47,132 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-21 13:49:47,133 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-21 13:49:47,133 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-21 13:49:47,133 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-21 13:49:47,133 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-21 13:49:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-21 13:49:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-21 13:49:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-21 13:49:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-21 13:49:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-21 13:49:47,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-21 13:49:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-21 13:49:47,135 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-21 13:49:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-21 13:49:47,137 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-21 13:49:47,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:49:47,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2020-08-21 13:49:47,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2020-08-21 13:49:47,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2020-08-21 13:49:47,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2020-08-21 13:49:47,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2020-08-21 13:49:47,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_12 [2020-08-21 13:49:47,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_13 [2020-08-21 13:49:47,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_14 [2020-08-21 13:49:47,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2020-08-21 13:49:47,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-08-21 13:49:47,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2020-08-21 13:49:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2020-08-21 13:49:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2020-08-21 13:49:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 13:49:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 13:49:47,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 13:49:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 13:49:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2020-08-21 13:49:47,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 13:49:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2020-08-21 13:49:47,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2020-08-21 13:49:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2020-08-21 13:49:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2020-08-21 13:49:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2020-08-21 13:49:47,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 13:49:47,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-21 13:49:47,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 13:49:47,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 13:49:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-21 13:49:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-21 13:49:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-21 13:49:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-21 13:49:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-21 13:49:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-21 13:49:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 13:49:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-21 13:49:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-21 13:49:47,150 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-21 13:49:47,151 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-21 13:49:47,151 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-21 13:49:47,152 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 13:49:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 13:49:47,153 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-21 13:49:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:49:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 13:49:47,153 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-21 13:49:47,154 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-21 13:49:47,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2020-08-21 13:49:47,156 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:49:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 13:49:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:49:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 13:49:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 13:49:47,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 13:49:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:49:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 13:49:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 13:49:47,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 13:49:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 13:49:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 13:49:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 13:49:47,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-21 13:49:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-21 13:49:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-21 13:49:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-21 13:49:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-21 13:49:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-21 13:49:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-21 13:49:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_12 [2020-08-21 13:49:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-21 13:49:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_13 [2020-08-21 13:49:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_14 [2020-08-21 13:49:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-21 13:49:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-21 13:49:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-21 13:49:47,166 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 13:49:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-21 13:49:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-21 13:49:47,167 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-21 13:49:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-21 13:49:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-21 13:49:47,168 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-21 13:49:47,175 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-21 13:49:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-21 13:49:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-21 13:49:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-21 13:49:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-21 13:49:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-21 13:49:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-21 13:49:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:49:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:49:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:49:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:49:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:49:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:49:47,178 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-21 13:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-21 13:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-21 13:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 13:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 13:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2020-08-21 13:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-08-21 13:49:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2020-08-21 13:49:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2020-08-21 13:49:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2020-08-21 13:49:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 13:49:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 13:49:47,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 13:49:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 13:49:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2020-08-21 13:49:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2020-08-21 13:49:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2020-08-21 13:49:47,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2020-08-21 13:49:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2020-08-21 13:49:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:49:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:49:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:49:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:49:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-21 13:49:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-21 13:49:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-21 13:49:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-21 13:49:47,884 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 13:49:51,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:49:51,315 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:49:51,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:49:51 BoogieIcfgContainer [2020-08-21 13:49:51,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:49:51,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:49:51,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:49:51,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:49:51,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:49:45" (1/3) ... [2020-08-21 13:49:51,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1807f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:49:51, skipping insertion in model container [2020-08-21 13:49:51,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:49:46" (2/3) ... [2020-08-21 13:49:51,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1807f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:49:51, skipping insertion in model container [2020-08-21 13:49:51,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:49:51" (3/3) ... [2020-08-21 13:49:51,333 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 [2020-08-21 13:49:51,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:49:51,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:49:51,368 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:49:51,396 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:49:51,396 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:49:51,396 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:49:51,396 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:49:51,396 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:49:51,397 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:49:51,397 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:49:51,397 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:49:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states. [2020-08-21 13:49:51,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-21 13:49:51,438 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:49:51,439 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] [2020-08-21 13:49:51,439 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:49:51,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:49:51,445 INFO L82 PathProgramCache]: Analyzing trace with hash -337560205, now seen corresponding path program 1 times [2020-08-21 13:49:51,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:49:51,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037216278] [2020-08-21 13:49:51,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:49:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:49:53,608 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-21 13:49:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:49:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:49:53,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:49:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:49:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:49:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:49:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-21 13:49:53,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:49:53,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:49:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:49:53,791 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 13:49:53,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037216278] [2020-08-21 13:49:53,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:49:53,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:49:53,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330824830] [2020-08-21 13:49:53,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:49:53,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:49:53,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:49:53,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:49:53,817 INFO L87 Difference]: Start difference. First operand 624 states. Second operand 6 states. [2020-08-21 13:49:57,019 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 528 [2020-08-21 13:50:07,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:50:07,930 INFO L93 Difference]: Finished difference Result 1420 states and 2070 transitions. [2020-08-21 13:50:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 13:50:07,932 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-08-21 13:50:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:50:07,958 INFO L225 Difference]: With dead ends: 1420 [2020-08-21 13:50:07,958 INFO L226 Difference]: Without dead ends: 864 [2020-08-21 13:50:07,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:50:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2020-08-21 13:50:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 600. [2020-08-21 13:50:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-21 13:50:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 822 transitions. [2020-08-21 13:50:08,188 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 822 transitions. Word has length 36 [2020-08-21 13:50:08,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:50:08,188 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 822 transitions. [2020-08-21 13:50:08,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:50:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 822 transitions. [2020-08-21 13:50:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 13:50:08,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:50:08,192 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] [2020-08-21 13:50:08,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:50:08,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:50:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:50:08,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1418341137, now seen corresponding path program 1 times [2020-08-21 13:50:08,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:50:08,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792712405] [2020-08-21 13:50:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:50:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:09,548 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-21 13:50:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:50:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:09,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:50:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:50:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:09,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:50:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:09,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:50:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:09,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:50:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:09,918 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 13:50:09,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792712405] [2020-08-21 13:50:09,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:50:09,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:50:09,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167697817] [2020-08-21 13:50:09,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:50:09,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:50:09,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:50:09,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:50:09,922 INFO L87 Difference]: Start difference. First operand 600 states and 822 transitions. Second operand 8 states. [2020-08-21 13:50:11,110 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 529 [2020-08-21 13:50:18,070 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 531 [2020-08-21 13:50:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:50:29,494 INFO L93 Difference]: Finished difference Result 1312 states and 1821 transitions. [2020-08-21 13:50:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:50:29,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-08-21 13:50:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:50:29,506 INFO L225 Difference]: With dead ends: 1312 [2020-08-21 13:50:29,506 INFO L226 Difference]: Without dead ends: 726 [2020-08-21 13:50:29,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-08-21 13:50:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2020-08-21 13:50:29,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 600. [2020-08-21 13:50:29,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-21 13:50:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 820 transitions. [2020-08-21 13:50:29,661 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 820 transitions. Word has length 48 [2020-08-21 13:50:29,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:50:29,661 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 820 transitions. [2020-08-21 13:50:29,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:50:29,661 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 820 transitions. [2020-08-21 13:50:29,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 13:50:29,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:50:29,664 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] [2020-08-21 13:50:29,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:50:29,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:50:29,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:50:29,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1356301523, now seen corresponding path program 1 times [2020-08-21 13:50:29,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:50:29,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72950953] [2020-08-21 13:50:29,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:50:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:31,059 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-21 13:50:31,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:50:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:31,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:50:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:31,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:50:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:31,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:50:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:31,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:50:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:50:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:31,432 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 13:50:31,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72950953] [2020-08-21 13:50:31,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:50:31,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:50:31,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247371348] [2020-08-21 13:50:31,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:50:31,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:50:31,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:50:31,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:50:31,436 INFO L87 Difference]: Start difference. First operand 600 states and 820 transitions. Second operand 7 states. [2020-08-21 13:50:32,642 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 529 [2020-08-21 13:50:46,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:50:46,212 INFO L93 Difference]: Finished difference Result 1314 states and 1820 transitions. [2020-08-21 13:50:46,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:50:46,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-08-21 13:50:46,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:50:46,220 INFO L225 Difference]: With dead ends: 1314 [2020-08-21 13:50:46,220 INFO L226 Difference]: Without dead ends: 728 [2020-08-21 13:50:46,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:50:46,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2020-08-21 13:50:46,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 602. [2020-08-21 13:50:46,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-08-21 13:50:46,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 822 transitions. [2020-08-21 13:50:46,356 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 822 transitions. Word has length 48 [2020-08-21 13:50:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:50:46,357 INFO L479 AbstractCegarLoop]: Abstraction has 602 states and 822 transitions. [2020-08-21 13:50:46,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:50:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 822 transitions. [2020-08-21 13:50:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-21 13:50:46,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:50:46,359 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] [2020-08-21 13:50:46,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:50:46,360 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:50:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:50:46,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2078713816, now seen corresponding path program 1 times [2020-08-21 13:50:46,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:50:46,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138698249] [2020-08-21 13:50:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:50:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:47,737 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 526 [2020-08-21 13:50:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:50:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:47,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:50:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:47,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:50:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:47,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 13:50:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:48,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:50:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:48,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 13:50:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:50:48,179 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 13:50:48,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138698249] [2020-08-21 13:50:48,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:50:48,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 13:50:48,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689482253] [2020-08-21 13:50:48,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:50:48,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:50:48,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:50:48,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:50:48,184 INFO L87 Difference]: Start difference. First operand 602 states and 822 transitions. Second operand 8 states.