/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:54:11,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:54:11,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:54:11,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:54:11,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:54:11,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:54:11,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:54:11,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:54:11,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:54:11,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:54:11,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:54:11,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:54:11,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:54:11,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:54:11,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:54:11,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:54:11,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:54:11,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:54:11,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:54:11,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:54:11,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:54:11,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:54:11,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:54:11,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:54:11,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:54:11,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:54:11,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:54:11,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:54:11,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:54:11,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:54:11,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:54:11,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:54:11,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:54:11,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:54:11,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:54:11,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:54:11,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:54:11,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:54:11,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:54:11,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:54:11,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:54:11,178 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 21:54:11,200 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:54:11,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:54:11,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:54:11,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:54:11,202 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:54:11,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:54:11,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:54:11,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:54:11,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:54:11,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:54:11,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:54:11,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:54:11,203 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:54:11,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:54:11,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:54:11,204 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:54:11,204 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:54:11,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:54:11,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:54:11,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:54:11,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:54:11,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:54:11,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:54:11,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:54:11,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:54:11,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:54:11,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 21:54:11,206 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:54:11,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:54:11,509 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:54:11,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:54:11,514 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:54:11,514 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:54:11,515 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 21:54:11,582 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd6d35971/2e4a1bd75233496eafbe6e10c7ecf3c4/FLAG2b553682e [2020-08-21 21:54:12,335 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:54:12,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 21:54:12,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd6d35971/2e4a1bd75233496eafbe6e10c7ecf3c4/FLAG2b553682e [2020-08-21 21:54:12,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd6d35971/2e4a1bd75233496eafbe6e10c7ecf3c4 [2020-08-21 21:54:12,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:54:12,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:54:12,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:54:12,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:54:12,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:54:12,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:54:12" (1/1) ... [2020-08-21 21:54:12,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b432d4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:12, skipping insertion in model container [2020-08-21 21:54:12,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:54:12" (1/1) ... [2020-08-21 21:54:12,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:54:13,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:54:14,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:54:14,561 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:54:14,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:54:14,890 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:54:14,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14 WrapperNode [2020-08-21 21:54:14,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:54:14,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:54:14,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:54:14,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:54:14,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (1/1) ... [2020-08-21 21:54:14,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (1/1) ... [2020-08-21 21:54:15,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (1/1) ... [2020-08-21 21:54:15,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (1/1) ... [2020-08-21 21:54:15,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (1/1) ... [2020-08-21 21:54:15,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (1/1) ... [2020-08-21 21:54:15,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (1/1) ... [2020-08-21 21:54:15,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:54:15,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:54:15,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:54:15,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:54:15,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (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 21:54:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:54:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:54:15,278 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-21 21:54:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-21 21:54:15,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-21 21:54:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-21 21:54:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-21 21:54:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-21 21:54:15,282 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-21 21:54:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-21 21:54:15,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-21 21:54:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 21:54:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 21:54:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 21:54:15,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 21:54:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-21 21:54:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-21 21:54:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 21:54:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 21:54:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 21:54:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-21 21:54:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-21 21:54:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-21 21:54:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-21 21:54:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-21 21:54:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-21 21:54:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-21 21:54:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-21 21:54:15,291 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-21 21:54:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-21 21:54:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-21 21:54:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-21 21:54:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-21 21:54:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-21 21:54:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-21 21:54:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-21 21:54:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-21 21:54:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-21 21:54:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:54:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-08-21 21:54:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-08-21 21:54:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-08-21 21:54:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 21:54:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-21 21:54:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-21 21:54:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-21 21:54:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-21 21:54:15,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-08-21 21:54:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-08-21 21:54:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-08-21 21:54:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-08-21 21:54:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-08-21 21:54:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 21:54:15,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-21 21:54:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-21 21:54:15,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-21 21:54:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-21 21:54:15,298 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-21 21:54:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-21 21:54:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-21 21:54:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-21 21:54:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-21 21:54:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 21:54:15,299 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-21 21:54:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-21 21:54:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-21 21:54:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-21 21:54:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-21 21:54:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-21 21:54:15,300 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 21:54:15,301 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 21:54:15,301 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 21:54:15,301 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-21 21:54:15,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:54:15,303 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-21 21:54:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-21 21:54:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 21:54:15,304 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-21 21:54:15,305 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-21 21:54:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-21 21:54:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-21 21:54:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-21 21:54:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-21 21:54:15,306 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-21 21:54:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-21 21:54:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-21 21:54:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-21 21:54:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-21 21:54:15,308 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-21 21:54:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 21:54:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 21:54:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-21 21:54:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-21 21:54:15,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 21:54:15,310 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 21:54:15,311 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:54:15,311 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 21:54:15,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:54:15,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 21:54:15,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:54:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 21:54:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:54:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 21:54:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-21 21:54:15,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-21 21:54:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 21:54:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 21:54:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 21:54:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 21:54:15,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-21 21:54:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-21 21:54:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-21 21:54:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-21 21:54:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-21 21:54:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-21 21:54:15,314 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-21 21:54:15,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-08-21 21:54:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-21 21:54:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-08-21 21:54:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-08-21 21:54:15,316 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-21 21:54:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-21 21:54:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-21 21:54:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-21 21:54:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-21 21:54:15,320 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-21 21:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-21 21:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-21 21:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-21 21:54:15,321 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-21 21:54:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-21 21:54:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-21 21:54:15,323 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-21 21:54:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-21 21:54:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-21 21:54:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-21 21:54:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-21 21:54:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:54:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:54:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:54:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:54:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:54:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:54:15,326 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-21 21:54:15,327 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-21 21:54:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-21 21:54:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 21:54:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 21:54:15,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:54:15,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 21:54:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-21 21:54:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-21 21:54:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-21 21:54:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-21 21:54:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-08-21 21:54:15,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-08-21 21:54:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-08-21 21:54:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-08-21 21:54:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-08-21 21:54:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:54:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:54:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:54:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:54:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-21 21:54:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-21 21:54:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-21 21:54:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-21 21:54:16,221 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 21:54:16,228 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-08-21 21:54:19,232 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:54:19,232 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 21:54:19,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:54:19 BoogieIcfgContainer [2020-08-21 21:54:19,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:54:19,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:54:19,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:54:19,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:54:19,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:54:12" (1/3) ... [2020-08-21 21:54:19,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667be4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:54:19, skipping insertion in model container [2020-08-21 21:54:19,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:54:14" (2/3) ... [2020-08-21 21:54:19,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667be4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:54:19, skipping insertion in model container [2020-08-21 21:54:19,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:54:19" (3/3) ... [2020-08-21 21:54:19,255 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-21 21:54:19,265 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:54:19,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:54:19,290 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:54:19,314 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:54:19,315 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:54:19,315 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:54:19,315 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:54:19,315 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:54:19,315 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:54:19,315 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:54:19,315 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:54:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-08-21 21:54:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 21:54:19,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:54:19,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:54:19,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:54:19,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:54:19,360 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-08-21 21:54:19,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:54:19,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884695890] [2020-08-21 21:54:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:54:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:21,996 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 21:54:21,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:54:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:54:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 21:54:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:22,143 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 21:54:22,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884695890] [2020-08-21 21:54:22,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:54:22,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 21:54:22,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085693646] [2020-08-21 21:54:22,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 21:54:22,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:54:22,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 21:54:22,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 21:54:22,170 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-08-21 21:54:24,422 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 516 [2020-08-21 21:54:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:54:35,806 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-08-21 21:54:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:54:35,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-21 21:54:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:54:35,838 INFO L225 Difference]: With dead ends: 1404 [2020-08-21 21:54:35,839 INFO L226 Difference]: Without dead ends: 854 [2020-08-21 21:54:35,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:54:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-21 21:54:36,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-08-21 21:54:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-21 21:54:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-08-21 21:54:36,098 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-08-21 21:54:36,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:54:36,099 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-08-21 21:54:36,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 21:54:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-08-21 21:54:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-21 21:54:36,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:54:36,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:54:36,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:54:36,103 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:54:36,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:54:36,104 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-08-21 21:54:36,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:54:36,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383654761] [2020-08-21 21:54:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:54:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:37,824 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 21:54:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:54:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:54:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:38,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:54:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:54:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:38,243 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 21:54:38,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383654761] [2020-08-21 21:54:38,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:54:38,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:54:38,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687371856] [2020-08-21 21:54:38,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:54:38,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:54:38,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:54:38,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:54:38,247 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-08-21 21:54:39,790 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 21:54:43,184 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 21:54:53,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:54:53,747 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-08-21 21:54:53,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 21:54:53,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-21 21:54:53,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:54:53,761 INFO L225 Difference]: With dead ends: 1298 [2020-08-21 21:54:53,761 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 21:54:53,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:54:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 21:54:53,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 21:54:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 21:54:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-08-21 21:54:53,923 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-08-21 21:54:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:54:53,923 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-08-21 21:54:53,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:54:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-08-21 21:54:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 21:54:53,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:54:53,926 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:54:53,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:54:53,926 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:54:53,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:54:53,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-08-21 21:54:53,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:54:53,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964464448] [2020-08-21 21:54:53,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:54:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:55,579 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 21:54:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:54:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:55,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:54:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:54:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:54:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:54:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-21 21:54:55,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964464448] [2020-08-21 21:54:55,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:54:55,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 21:54:55,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773259449] [2020-08-21 21:54:55,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:54:55,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:54:55,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:54:55,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:54:55,950 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-08-21 21:54:57,461 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-21 21:55:00,760 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-21 21:55:12,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:55:12,434 INFO L93 Difference]: Finished difference Result 1300 states and 1805 transitions. [2020-08-21 21:55:12,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 21:55:12,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-21 21:55:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:55:12,441 INFO L225 Difference]: With dead ends: 1300 [2020-08-21 21:55:12,442 INFO L226 Difference]: Without dead ends: 718 [2020-08-21 21:55:12,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 21:55:12,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-21 21:55:12,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-21 21:55:12,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-21 21:55:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 811 transitions. [2020-08-21 21:55:12,631 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 811 transitions. Word has length 40 [2020-08-21 21:55:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:55:12,632 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 811 transitions. [2020-08-21 21:55:12,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:55:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 811 transitions. [2020-08-21 21:55:12,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 21:55:12,634 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:55:12,635 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 21:55:12,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:55:12,635 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:55:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:55:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-08-21 21:55:12,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:55:12,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831655015] [2020-08-21 21:55:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:55:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,336 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-21 21:55:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:55:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:55:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-21 21:55:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:55:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-21 21:55:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:55:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:55:14,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:55:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:55:14,795 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 21:55:14,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831655015] [2020-08-21 21:55:14,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:55:14,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 21:55:14,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873620417] [2020-08-21 21:55:14,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 21:55:14,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:55:14,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 21:55:14,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-21 21:55:14,798 INFO L87 Difference]: Start difference. First operand 592 states and 811 transitions. Second operand 8 states. [2020-08-21 21:55:16,240 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 517