/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-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-eb0fd7c [2020-09-21 11:01:28,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:01:28,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:01:28,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:01:28,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:01:28,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:01:28,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:01:28,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:01:28,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:01:28,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:01:28,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:01:28,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:01:28,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:01:28,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:01:28,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:01:28,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:01:28,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:01:28,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:01:28,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:01:28,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:01:28,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:01:28,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:01:28,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:01:28,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:01:28,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:01:28,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:01:28,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:01:28,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:01:28,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:01:28,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:01:28,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:01:28,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:01:28,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:01:28,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:01:28,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:01:28,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:01:28,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:01:28,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:01:28,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:01:28,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:01:28,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:01:28,318 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 [2020-09-21 11:01:28,369 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:01:28,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:01:28,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:01:28,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:01:28,372 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:01:28,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:01:28,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:01:28,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:01:28,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:01:28,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:01:28,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:01:28,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:01:28,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:01:28,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:01:28,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:01:28,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:01:28,376 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:01:28,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:01:28,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:01:28,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:01:28,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:01:28,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:01:28,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:01:28,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:01:28,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:01:28,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:01:28,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 11:01:28,378 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 11:01:28,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:01:28,873 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:01:28,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:01:28,879 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:01:28,879 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:01:28,881 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 11:01:28,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d1e05c5/8654534d8b0b4e95bd91d273624bc8d6/FLAGc77c56e00 [2020-09-21 11:01:29,838 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:01:29,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 11:01:29,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d1e05c5/8654534d8b0b4e95bd91d273624bc8d6/FLAGc77c56e00 [2020-09-21 11:01:30,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9d1e05c5/8654534d8b0b4e95bd91d273624bc8d6 [2020-09-21 11:01:30,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:01:30,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:01:30,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:01:30,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:01:30,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:01:30,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:01:30" (1/1) ... [2020-09-21 11:01:30,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1aa6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:30, skipping insertion in model container [2020-09-21 11:01:30,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:01:30" (1/1) ... [2020-09-21 11:01:30,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:01:30,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:01:32,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:01:32,159 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:01:32,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:01:32,427 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:01:32,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32 WrapperNode [2020-09-21 11:01:32,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:01:32,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:01:32,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:01:32,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:01:32,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (1/1) ... [2020-09-21 11:01:32,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (1/1) ... [2020-09-21 11:01:32,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (1/1) ... [2020-09-21 11:01:32,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (1/1) ... [2020-09-21 11:01:32,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (1/1) ... [2020-09-21 11:01:32,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (1/1) ... [2020-09-21 11:01:32,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (1/1) ... [2020-09-21 11:01:32,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:01:32,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:01:32,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:01:32,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:01:32,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (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 [2020-09-21 11:01:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:01:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:01:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-09-21 11:01:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-09-21 11:01:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-09-21 11:01:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-09-21 11:01:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-09-21 11:01:32,798 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-09-21 11:01:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-09-21 11:01:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-09-21 11:01:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-09-21 11:01:32,799 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-21 11:01:32,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:01:32,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 11:01:32,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 11:01:32,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-09-21 11:01:32,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-09-21 11:01:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 11:01:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 11:01:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 11:01:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-09-21 11:01:32,806 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-09-21 11:01:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-09-21 11:01:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-09-21 11:01:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-09-21 11:01:32,807 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-09-21 11:01:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-09-21 11:01:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-09-21 11:01:32,808 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-09-21 11:01:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-09-21 11:01:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-09-21 11:01:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-09-21 11:01:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-09-21 11:01:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-09-21 11:01:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-09-21 11:01:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-09-21 11:01:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-09-21 11:01:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-09-21 11:01:32,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:01:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-09-21 11:01:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-09-21 11:01:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-09-21 11:01:32,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 11:01:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-09-21 11:01:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-09-21 11:01:32,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-09-21 11:01:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-09-21 11:01:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-09-21 11:01:32,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-09-21 11:01:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-09-21 11:01:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-09-21 11:01:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-09-21 11:01:32,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 11:01:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-09-21 11:01:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-09-21 11:01:32,817 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-09-21 11:01:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-09-21 11:01:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-09-21 11:01:32,818 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-09-21 11:01:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-09-21 11:01:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-09-21 11:01:32,819 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-09-21 11:01:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 11:01:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-09-21 11:01:32,820 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-09-21 11:01:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-09-21 11:01:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-09-21 11:01:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-09-21 11:01:32,821 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-09-21 11:01:32,822 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 11:01:32,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-21 11:01:32,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 11:01:32,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-09-21 11:01:32,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:01:32,824 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-09-21 11:01:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-21 11:01:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-21 11:01:32,825 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-09-21 11:01:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-09-21 11:01:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-09-21 11:01:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-09-21 11:01:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-09-21 11:01:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-09-21 11:01:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-09-21 11:01:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-09-21 11:01:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-09-21 11:01:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-09-21 11:01:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-09-21 11:01:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-09-21 11:01:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 11:01:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 11:01:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-09-21 11:01:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-09-21 11:01:32,832 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 11:01:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-21 11:01:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:01:32,833 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:01:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:01:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 11:01:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:01:32,834 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:01:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:01:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 11:01:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-09-21 11:01:32,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-09-21 11:01:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-21 11:01:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 11:01:32,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 11:01:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 11:01:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-09-21 11:01:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-09-21 11:01:32,837 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-09-21 11:01:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-09-21 11:01:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-09-21 11:01:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-09-21 11:01:32,838 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-09-21 11:01:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-09-21 11:01:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-09-21 11:01:32,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-09-21 11:01:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-09-21 11:01:32,840 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-09-21 11:01:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-09-21 11:01:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-09-21 11:01:32,841 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-09-21 11:01:32,842 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-09-21 11:01:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-09-21 11:01:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-09-21 11:01:32,843 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-09-21 11:01:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-09-21 11:01:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-09-21 11:01:32,844 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-09-21 11:01:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-09-21 11:01:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-09-21 11:01:32,845 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-09-21 11:01:32,846 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-09-21 11:01:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-09-21 11:01:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-09-21 11:01:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:01:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:01:32,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:01:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:01:32,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:01:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:01:32,854 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-09-21 11:01:32,855 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-09-21 11:01:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-09-21 11:01:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 11:01:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 11:01:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:01:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 11:01:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-09-21 11:01:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-09-21 11:01:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-09-21 11:01:32,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-09-21 11:01:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-09-21 11:01:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-09-21 11:01:32,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-09-21 11:01:32,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-09-21 11:01:32,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-09-21 11:01:32,868 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:01:32,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:01:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:01:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:01:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-09-21 11:01:32,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-09-21 11:01:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-09-21 11:01:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-09-21 11:01:33,976 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 11:01:33,982 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-09-21 11:01:37,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:01:37,218 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:01:37,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:01:37 BoogieIcfgContainer [2020-09-21 11:01:37,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:01:37,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:01:37,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:01:37,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:01:37,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:01:30" (1/3) ... [2020-09-21 11:01:37,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d663650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:01:37, skipping insertion in model container [2020-09-21 11:01:37,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:01:32" (2/3) ... [2020-09-21 11:01:37,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d663650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:01:37, skipping insertion in model container [2020-09-21 11:01:37,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:01:37" (3/3) ... [2020-09-21 11:01:37,238 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-09-21 11:01:37,250 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:01:37,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:01:37,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:01:37,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:01:37,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:01:37,333 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:01:37,333 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:01:37,333 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:01:37,333 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:01:37,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:01:37,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:01:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-09-21 11:01:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:01:37,390 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:01:37,391 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] [2020-09-21 11:01:37,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:01:37,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:01:37,402 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-09-21 11:01:37,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:01:37,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825167840] [2020-09-21 11:01:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:01:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:40,161 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 514 [2020-09-21 11:01:40,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:01:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:40,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 11:01:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:01:40,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825167840] [2020-09-21 11:01:40,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:01:40,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:01:40,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54898997] [2020-09-21 11:01:40,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:01:40,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:01:40,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:01:40,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:01:40,390 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-09-21 11:01:43,055 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification that was a NOOP. DAG size: 516 [2020-09-21 11:01:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:01:56,549 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-09-21 11:01:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:01:56,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-09-21 11:01:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:01:56,580 INFO L225 Difference]: With dead ends: 1404 [2020-09-21 11:01:56,581 INFO L226 Difference]: Without dead ends: 854 [2020-09-21 11:01:56,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:01:56,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-09-21 11:01:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-09-21 11:01:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-09-21 11:01:56,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-09-21 11:01:56,862 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-09-21 11:01:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:01:56,862 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-09-21 11:01:56,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:01:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-09-21 11:01:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 11:01:56,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:01:56,866 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] [2020-09-21 11:01:56,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:01:56,867 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:01:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:01:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-09-21 11:01:56,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:01:56,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237291321] [2020-09-21 11:01:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:01:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:58,992 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 514 [2020-09-21 11:01:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:59,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:01:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:59,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 11:01:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:59,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:01:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:01:59,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237291321] [2020-09-21 11:01:59,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:01:59,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:01:59,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53692209] [2020-09-21 11:01:59,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:01:59,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:01:59,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:01:59,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:01:59,538 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-09-21 11:02:01,426 WARN L193 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 517 [2020-09-21 11:02:07,473 WARN L193 SmtUtils]: Spent 1.88 s on a formula simplification that was a NOOP. DAG size: 519 [2020-09-21 11:02:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:02:19,412 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-09-21 11:02:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:02:19,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-21 11:02:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:02:19,423 INFO L225 Difference]: With dead ends: 1298 [2020-09-21 11:02:19,423 INFO L226 Difference]: Without dead ends: 718 [2020-09-21 11:02:19,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:02:19,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-09-21 11:02:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-09-21 11:02:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-09-21 11:02:19,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-09-21 11:02:19,580 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-09-21 11:02:19,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:02:19,580 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-09-21 11:02:19,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:02:19,580 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-09-21 11:02:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:02:19,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:02:19,583 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] [2020-09-21 11:02:19,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:02:19,583 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:02:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:02:19,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-09-21 11:02:19,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:02:19,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965289051] [2020-09-21 11:02:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:02:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:02:21,639 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 514 [2020-09-21 11:02:21,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:02:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:02:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:02:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:02:21,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 11:02:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:02:22,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:02:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:02:22,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:02:22,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965289051] [2020-09-21 11:02:22,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:02:22,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 11:02:22,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449138171] [2020-09-21 11:02:22,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:02:22,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:02:22,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:02:22,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:02:22,142 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-09-21 11:02:23,980 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification that was a NOOP. DAG size: 517 [2020-09-21 11:02:27,261 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 519