/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 [2020-08-22 04:23:01,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:23:01,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:23:01,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:23:01,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:23:01,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:23:01,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:23:01,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:23:01,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:23:01,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:23:01,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:23:01,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:23:01,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:23:01,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:23:01,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:23:01,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:23:01,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:23:01,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:23:01,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:23:01,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:23:01,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:23:01,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:23:01,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:23:01,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:23:01,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:23:01,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:23:01,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:23:01,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:23:01,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:23:01,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:23:01,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:23:01,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:23:01,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:23:01,153 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:23:01,154 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:23:01,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:23:01,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:23:01,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:23:01,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:23:01,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:23:01,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:23:01,158 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 [2020-08-22 04:23:01,180 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:23:01,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:23:01,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:23:01,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:23:01,182 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:23:01,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:23:01,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:23:01,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:23:01,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:23:01,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:23:01,183 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:23:01,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:23:01,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:23:01,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:23:01,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:23:01,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:23:01,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:23:01,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:23:01,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:23:01,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:23:01,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:23:01,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:23:01,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:23:01,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:23:01,186 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:23:01,186 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:23:01,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 04:23:01,187 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 04:23:01,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:23:01,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:23:01,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:23:01,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:23:01,491 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:23:01,492 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-22 04:23:01,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a42fd0c/423c6672bf424c8ea41259d8918f69fe/FLAG130084688 [2020-08-22 04:23:02,376 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:23:02,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-22 04:23:02,417 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a42fd0c/423c6672bf424c8ea41259d8918f69fe/FLAG130084688 [2020-08-22 04:23:02,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a42fd0c/423c6672bf424c8ea41259d8918f69fe [2020-08-22 04:23:02,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:23:02,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:23:02,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:23:02,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:23:02,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:23:02,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:23:02" (1/1) ... [2020-08-22 04:23:02,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c88769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:02, skipping insertion in model container [2020-08-22 04:23:02,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:23:02" (1/1) ... [2020-08-22 04:23:02,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:23:03,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:23:04,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:23:04,498 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:23:04,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:23:04,897 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:23:04,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04 WrapperNode [2020-08-22 04:23:04,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:23:04,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:23:04,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:23:04,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:23:04,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (1/1) ... [2020-08-22 04:23:04,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (1/1) ... [2020-08-22 04:23:04,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (1/1) ... [2020-08-22 04:23:04,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (1/1) ... [2020-08-22 04:23:05,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (1/1) ... [2020-08-22 04:23:05,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (1/1) ... [2020-08-22 04:23:05,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (1/1) ... [2020-08-22 04:23:05,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:23:05,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:23:05,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:23:05,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:23:05,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (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 [2020-08-22 04:23:05,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:23:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:23:05,196 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-22 04:23:05,197 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-22 04:23:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-22 04:23:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-22 04:23:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-22 04:23:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-22 04:23:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-22 04:23:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-22 04:23:05,200 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-22 04:23:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 04:23:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 04:23:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 04:23:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 04:23:05,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-22 04:23:05,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-22 04:23:05,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 04:23:05,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 04:23:05,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 04:23:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-22 04:23:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-22 04:23:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-22 04:23:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-22 04:23:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-22 04:23:05,205 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-22 04:23:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-22 04:23:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-22 04:23:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-22 04:23:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-22 04:23:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-22 04:23:05,206 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-22 04:23:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-22 04:23:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-22 04:23:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-22 04:23:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-22 04:23:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-22 04:23:05,207 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-22 04:23:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:23:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-08-22 04:23:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-08-22 04:23:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-08-22 04:23:05,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 04:23:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-22 04:23:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-22 04:23:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-22 04:23:05,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-22 04:23:05,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-08-22 04:23:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-08-22 04:23:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-08-22 04:23:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-08-22 04:23:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-08-22 04:23:05,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 04:23:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-22 04:23:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-22 04:23:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-22 04:23:05,212 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-22 04:23:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-22 04:23:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-22 04:23:05,213 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-22 04:23:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-22 04:23:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-22 04:23:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 04:23:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-22 04:23:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-22 04:23:05,214 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-22 04:23:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-22 04:23:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-22 04:23:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-22 04:23:05,215 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 04:23:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-22 04:23:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 04:23:05,216 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-22 04:23:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:23:05,217 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-22 04:23:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-22 04:23:05,218 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-22 04:23:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-22 04:23:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-22 04:23:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-22 04:23:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-22 04:23:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-22 04:23:05,219 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-22 04:23:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-22 04:23:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-22 04:23:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-22 04:23:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-22 04:23:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-22 04:23:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-22 04:23:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 04:23:05,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 04:23:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-22 04:23:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-22 04:23:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 04:23:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 04:23:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:23:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 04:23:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:23:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 04:23:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 04:23:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 04:23:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:23:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 04:23:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-22 04:23:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-22 04:23:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-22 04:23:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 04:23:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 04:23:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 04:23:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-22 04:23:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-22 04:23:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-22 04:23:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-22 04:23:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-22 04:23:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-22 04:23:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-22 04:23:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-08-22 04:23:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-22 04:23:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-08-22 04:23:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-08-22 04:23:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-22 04:23:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-22 04:23:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-22 04:23:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-22 04:23:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-22 04:23:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-22 04:23:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-22 04:23:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-22 04:23:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-22 04:23:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-22 04:23:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-22 04:23:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-22 04:23:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-22 04:23:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-22 04:23:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-22 04:23:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-22 04:23:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-22 04:23:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:23:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:23:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:23:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:23:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:23:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:23:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-22 04:23:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-22 04:23:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-22 04:23:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 04:23:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 04:23:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:23:05,245 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 04:23:05,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-22 04:23:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-22 04:23:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-22 04:23:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-22 04:23:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-08-22 04:23:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-08-22 04:23:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-08-22 04:23:05,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-08-22 04:23:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-08-22 04:23:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:23:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:23:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:23:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:23:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-22 04:23:05,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-22 04:23:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-22 04:23:05,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-22 04:23:06,237 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 04:23:06,243 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-08-22 04:23:09,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:23:09,614 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 04:23:09,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:23:09 BoogieIcfgContainer [2020-08-22 04:23:09,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:23:09,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:23:09,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:23:09,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:23:09,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:23:02" (1/3) ... [2020-08-22 04:23:09,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24538a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:23:09, skipping insertion in model container [2020-08-22 04:23:09,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:23:04" (2/3) ... [2020-08-22 04:23:09,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24538a50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:23:09, skipping insertion in model container [2020-08-22 04:23:09,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:23:09" (3/3) ... [2020-08-22 04:23:09,631 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-22 04:23:09,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:23:09,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:23:09,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:23:09,695 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:23:09,695 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:23:09,696 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:23:09,696 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:23:09,696 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:23:09,696 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:23:09,696 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:23:09,696 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:23:09,732 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-08-22 04:23:09,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 04:23:09,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:23:09,742 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] [2020-08-22 04:23:09,743 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:23:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:23:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-08-22 04:23:09,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:23:09,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283965484] [2020-08-22 04:23:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:23:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:11,941 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 04:23:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:23:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:23:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:12,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:23:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:23:12,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283965484] [2020-08-22 04:23:12,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:23:12,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:23:12,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798948462] [2020-08-22 04:23:12,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:23:12,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:23:12,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:23:12,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:23:12,122 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-08-22 04:23:14,011 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 516 [2020-08-22 04:23:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:23:24,307 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-08-22 04:23:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:23:24,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-22 04:23:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:23:24,335 INFO L225 Difference]: With dead ends: 1404 [2020-08-22 04:23:24,335 INFO L226 Difference]: Without dead ends: 854 [2020-08-22 04:23:24,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:23:24,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-22 04:23:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-08-22 04:23:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-22 04:23:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-08-22 04:23:24,620 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-08-22 04:23:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:23:24,621 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-08-22 04:23:24,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:23:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-08-22 04:23:24,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 04:23:24,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:23:24,630 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] [2020-08-22 04:23:24,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:23:24,630 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:23:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:23:24,631 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-08-22 04:23:24,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:23:24,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146188319] [2020-08-22 04:23:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:23:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:26,134 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 04:23:26,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:23:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:23:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:26,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:23:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:26,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:23:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:23:26,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146188319] [2020-08-22 04:23:26,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:23:26,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:23:26,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760094606] [2020-08-22 04:23:26,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:23:26,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:23:26,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:23:26,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:23:26,525 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-08-22 04:23:27,682 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-22 04:23:33,057 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-22 04:23:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:23:42,797 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-08-22 04:23:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:23:42,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-22 04:23:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:23:42,811 INFO L225 Difference]: With dead ends: 1298 [2020-08-22 04:23:42,812 INFO L226 Difference]: Without dead ends: 718 [2020-08-22 04:23:42,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:23:42,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-22 04:23:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-22 04:23:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-22 04:23:42,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-08-22 04:23:42,961 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-08-22 04:23:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:23:42,961 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-08-22 04:23:42,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:23:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-08-22 04:23:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 04:23:42,963 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:23:42,964 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] [2020-08-22 04:23:42,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:23:42,964 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:23:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:23:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-08-22 04:23:42,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:23:42,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860154705] [2020-08-22 04:23:42,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:23:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:44,321 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 04:23:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:23:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:44,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:23:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:23:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:23:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 04:23:44,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860154705] [2020-08-22 04:23:44,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:23:44,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 04:23:44,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267559374] [2020-08-22 04:23:44,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 04:23:44,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:23:44,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 04:23:44,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:23:44,695 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-08-22 04:23:45,886 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-22 04:23:47,804 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-22 04:23:57,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:23:57,848 INFO L93 Difference]: Finished difference Result 1300 states and 1805 transitions. [2020-08-22 04:23:57,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 04:23:57,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-22 04:23:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:23:57,855 INFO L225 Difference]: With dead ends: 1300 [2020-08-22 04:23:57,855 INFO L226 Difference]: Without dead ends: 718 [2020-08-22 04:23:57,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:23:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-22 04:23:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-22 04:23:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-22 04:23:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 811 transitions. [2020-08-22 04:23:58,037 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 811 transitions. Word has length 40 [2020-08-22 04:23:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:23:58,038 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 811 transitions. [2020-08-22 04:23:58,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 04:23:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 811 transitions. [2020-08-22 04:23:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 04:23:58,040 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:23:58,040 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] [2020-08-22 04:23:58,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:23:58,041 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:23:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:23:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-08-22 04:23:58,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:23:58,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764653675] [2020-08-22 04:23:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:23:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,350 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 04:23:59,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:23:59,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:23:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 04:23:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:23:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 04:23:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:23:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:23:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:23:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:23:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:23:59,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764653675] [2020-08-22 04:23:59,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:23:59,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 04:23:59,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326093756] [2020-08-22 04:23:59,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:23:59,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:23:59,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:23:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:23:59,834 INFO L87 Difference]: Start difference. First operand 592 states and 811 transitions. Second operand 8 states. [2020-08-22 04:24:01,092 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 517