/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=0.4 --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 06:00:12,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:00:12,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:00:12,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:00:12,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:00:12,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:00:12,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:00:12,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:00:12,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:00:12,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:00:12,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:00:12,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:00:12,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:00:12,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:00:12,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:00:12,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:00:12,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:00:12,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:00:12,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:00:12,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:00:12,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:00:12,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:00:12,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:00:12,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:00:12,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:00:12,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:00:12,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:00:12,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:00:12,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:00:12,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:00:12,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:00:12,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:00:12,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:00:12,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:00:12,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:00:12,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:00:12,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:00:12,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:00:12,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:00:12,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:00:12,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:00:12,323 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 06:00:12,370 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:00:12,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:00:12,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:00:12,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:00:12,373 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:00:12,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:00:12,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:00:12,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:00:12,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:00:12,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:00:12,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:00:12,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:00:12,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:00:12,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:00:12,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:00:12,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:00:12,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:00:12,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:00:12,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:00:12,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:00:12,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:00:12,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:00:12,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:00:12,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:00:12,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:00:12,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:00:12,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 06:00:12,379 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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-08-22 06:00:12,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:00:12,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:00:12,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:00:12,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:00:12,686 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:00:12,687 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-22 06:00:12,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1b6c6069/03114ccd9772456bae9d1e8114465fc0/FLAG858bffdc6 [2020-08-22 06:00:13,620 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:00:13,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--arcnet--com90xx.ko-entry_point.cil.out.i [2020-08-22 06:00:13,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1b6c6069/03114ccd9772456bae9d1e8114465fc0/FLAG858bffdc6 [2020-08-22 06:00:14,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e1b6c6069/03114ccd9772456bae9d1e8114465fc0 [2020-08-22 06:00:14,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:00:14,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:00:14,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:00:14,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:00:14,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:00:14,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:00:14" (1/1) ... [2020-08-22 06:00:14,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d9c540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:14, skipping insertion in model container [2020-08-22 06:00:14,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:00:14" (1/1) ... [2020-08-22 06:00:14,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:00:14,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:00:15,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:00:15,743 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:00:16,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:00:16,144 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:00:16,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16 WrapperNode [2020-08-22 06:00:16,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:00:16,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:00:16,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:00:16,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:00:16,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (1/1) ... [2020-08-22 06:00:16,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (1/1) ... [2020-08-22 06:00:16,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (1/1) ... [2020-08-22 06:00:16,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (1/1) ... [2020-08-22 06:00:16,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (1/1) ... [2020-08-22 06:00:16,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (1/1) ... [2020-08-22 06:00:16,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (1/1) ... [2020-08-22 06:00:16,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:00:16,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:00:16,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:00:16,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:00:16,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (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 06:00:16,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:00:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:00:16,520 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2020-08-22 06:00:16,521 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2020-08-22 06:00:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2020-08-22 06:00:16,522 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2020-08-22 06:00:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2020-08-22 06:00:16,523 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2020-08-22 06:00:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2020-08-22 06:00:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-22 06:00:16,524 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-22 06:00:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 06:00:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:00:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 06:00:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 06:00:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2020-08-22 06:00:16,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2020-08-22 06:00:16,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 06:00:16,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 06:00:16,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 06:00:16,533 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2020-08-22 06:00:16,534 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2020-08-22 06:00:16,534 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_probe [2020-08-22 06:00:16,534 INFO L138 BoogieDeclarations]: Found implementation of procedure check_mirror [2020-08-22 06:00:16,534 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_found [2020-08-22 06:00:16,535 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_command [2020-08-22 06:00:16,535 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_status [2020-08-22 06:00:16,536 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_setmask [2020-08-22 06:00:16,536 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_reset [2020-08-22 06:00:16,536 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_to_card [2020-08-22 06:00:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_copy_from_card [2020-08-22 06:00:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_init [2020-08-22 06:00:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure com90xx_exit [2020-08-22 06:00:16,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2020-08-22 06:00:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2020-08-22 06:00:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2020-08-22 06:00:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_interrupt_1 [2020-08-22 06:00:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2020-08-22 06:00:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:00:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq_5 [2020-08-22 06:00:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_6 [2020-08-22 06:00:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq_7 [2020-08-22 06:00:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 06:00:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2020-08-22 06:00:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2020-08-22 06:00:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2020-08-22 06:00:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2020-08-22 06:00:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2020-08-22 06:00:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2020-08-22 06:00:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2020-08-22 06:00:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2020-08-22 06:00:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2020-08-22 06:00:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 06:00:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2020-08-22 06:00:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2020-08-22 06:00:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2020-08-22 06:00:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_arcdev [2020-08-22 06:00:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_interrupt [2020-08-22 06:00:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2020-08-22 06:00:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2020-08-22 06:00:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2020-08-22 06:00:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2020-08-22 06:00:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 06:00:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2020-08-22 06:00:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_off [2020-08-22 06:00:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_irq_on [2020-08-22 06:00:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2020-08-22 06:00:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2020-08-22 06:00:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2020-08-22 06:00:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 06:00:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-22 06:00:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 06:00:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2020-08-22 06:00:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:00:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2020-08-22 06:00:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-08-22 06:00:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-22 06:00:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2020-08-22 06:00:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2020-08-22 06:00:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2020-08-22 06:00:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2020-08-22 06:00:16,554 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2020-08-22 06:00:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2020-08-22 06:00:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2020-08-22 06:00:16,555 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2020-08-22 06:00:16,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2020-08-22 06:00:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2020-08-22 06:00:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2020-08-22 06:00:16,557 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2020-08-22 06:00:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 06:00:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 06:00:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-22 06:00:16,558 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-22 06:00:16,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 06:00:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 06:00:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:00:16,560 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 06:00:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:00:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 06:00:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:00:16,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:00:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:00:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 06:00:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2020-08-22 06:00:16,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2020-08-22 06:00:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-22 06:00:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 06:00:16,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 06:00:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 06:00:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2020-08-22 06:00:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2020-08-22 06:00:16,564 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2020-08-22 06:00:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure choose_interrupt_1 [2020-08-22 06:00:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2020-08-22 06:00:16,565 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2020-08-22 06:00:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2020-08-22 06:00:16,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq_5 [2020-08-22 06:00:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2020-08-22 06:00:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_6 [2020-08-22 06:00:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq_7 [2020-08-22 06:00:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_on [2020-08-22 06:00:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure probe_irq_off [2020-08-22 06:00:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2020-08-22 06:00:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2020-08-22 06:00:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2020-08-22 06:00:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2020-08-22 06:00:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2020-08-22 06:00:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_interrupt [2020-08-22 06:00:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_arcdev [2020-08-22 06:00:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_found [2020-08-22 06:00:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_command [2020-08-22 06:00:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_status [2020-08-22 06:00:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_setmask [2020-08-22 06:00:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_reset [2020-08-22 06:00:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_to_card [2020-08-22 06:00:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_copy_from_card [2020-08-22 06:00:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_probe [2020-08-22 06:00:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:00:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:00:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:00:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:00:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 06:00:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 06:00:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure check_mirror [2020-08-22 06:00:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_init [2020-08-22 06:00:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure com90xx_exit [2020-08-22 06:00:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 06:00:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 06:00:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:00:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 06:00:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2020-08-22 06:00:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2020-08-22 06:00:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2020-08-22 06:00:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2020-08-22 06:00:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2020-08-22 06:00:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2020-08-22 06:00:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2020-08-22 06:00:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2020-08-22 06:00:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2020-08-22 06:00:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 06:00:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:00:16,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 06:00:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:00:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-08-22 06:00:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-08-22 06:00:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-08-22 06:00:16,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-08-22 06:00:17,627 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 06:00:17,633 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2020-08-22 06:00:21,076 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:00:21,076 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 06:00:21,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:00:21 BoogieIcfgContainer [2020-08-22 06:00:21,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:00:21,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:00:21,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:00:21,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:00:21,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:00:14" (1/3) ... [2020-08-22 06:00:21,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53952718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:00:21, skipping insertion in model container [2020-08-22 06:00:21,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:00:16" (2/3) ... [2020-08-22 06:00:21,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53952718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:00:21, skipping insertion in model container [2020-08-22 06:00:21,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:00:21" (3/3) ... [2020-08-22 06:00:21,096 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 06:00:21,110 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:00:21,121 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:00:21,139 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:00:21,171 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:00:21,171 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:00:21,171 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:00:21,171 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:00:21,172 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:00:21,172 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:00:21,172 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:00:21,172 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:00:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2020-08-22 06:00:21,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 06:00:21,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:21,221 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 06:00:21,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash 915174829, now seen corresponding path program 1 times [2020-08-22 06:00:21,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:21,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363077349] [2020-08-22 06:00:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:23,684 WARN L193 SmtUtils]: Spent 1.69 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 06:00:23,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:23,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:23,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 06:00:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:23,900 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 06:00:23,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363077349] [2020-08-22 06:00:23,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:00:23,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:00:23,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177589523] [2020-08-22 06:00:23,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:00:23,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:23,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:00:23,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:00:23,927 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 5 states. [2020-08-22 06:00:26,112 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 516 [2020-08-22 06:00:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:37,671 INFO L93 Difference]: Finished difference Result 1404 states and 2054 transitions. [2020-08-22 06:00:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:00:37,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-22 06:00:37,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:37,703 INFO L225 Difference]: With dead ends: 1404 [2020-08-22 06:00:37,703 INFO L226 Difference]: Without dead ends: 854 [2020-08-22 06:00:37,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:00:37,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2020-08-22 06:00:37,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 590. [2020-08-22 06:00:37,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-08-22 06:00:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 812 transitions. [2020-08-22 06:00:37,920 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 812 transitions. Word has length 26 [2020-08-22 06:00:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:37,921 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 812 transitions. [2020-08-22 06:00:37,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:00:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 812 transitions. [2020-08-22 06:00:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 06:00:37,924 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:37,924 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 06:00:37,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:00:37,925 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash 568046743, now seen corresponding path program 1 times [2020-08-22 06:00:37,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:37,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786680726] [2020-08-22 06:00:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:39,565 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 06:00:39,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:39,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:00:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:39,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:39,973 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 06:00:39,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786680726] [2020-08-22 06:00:39,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:00:39,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:00:39,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506872759] [2020-08-22 06:00:39,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:00:39,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:39,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:00:39,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:00:39,977 INFO L87 Difference]: Start difference. First operand 590 states and 812 transitions. Second operand 7 states. [2020-08-22 06:00:41,447 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-22 06:00:45,172 WARN L193 SmtUtils]: Spent 1.55 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-22 06:00:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:00:55,496 INFO L93 Difference]: Finished difference Result 1298 states and 1808 transitions. [2020-08-22 06:00:55,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 06:00:55,500 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-22 06:00:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:00:55,512 INFO L225 Difference]: With dead ends: 1298 [2020-08-22 06:00:55,512 INFO L226 Difference]: Without dead ends: 718 [2020-08-22 06:00:55,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 06:00:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-22 06:00:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-22 06:00:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-22 06:00:55,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 812 transitions. [2020-08-22 06:00:55,675 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 812 transitions. Word has length 38 [2020-08-22 06:00:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:00:55,677 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 812 transitions. [2020-08-22 06:00:55,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:00:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 812 transitions. [2020-08-22 06:00:55,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 06:00:55,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:00:55,690 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 06:00:55,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:00:55,690 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:00:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:00:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1713732304, now seen corresponding path program 1 times [2020-08-22 06:00:55,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:00:55,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185397116] [2020-08-22 06:00:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:00:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:57,342 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 06:00:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:00:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:00:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:57,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:00:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:57,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:00:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:00:57,647 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 06:00:57,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185397116] [2020-08-22 06:00:57,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:00:57,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 06:00:57,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993903211] [2020-08-22 06:00:57,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 06:00:57,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:00:57,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 06:00:57,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 06:00:57,650 INFO L87 Difference]: Start difference. First operand 592 states and 812 transitions. Second operand 7 states. [2020-08-22 06:00:59,090 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 517 [2020-08-22 06:01:01,295 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 519 [2020-08-22 06:01:12,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:01:12,406 INFO L93 Difference]: Finished difference Result 1300 states and 1805 transitions. [2020-08-22 06:01:12,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:01:12,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-08-22 06:01:12,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:01:12,418 INFO L225 Difference]: With dead ends: 1300 [2020-08-22 06:01:12,418 INFO L226 Difference]: Without dead ends: 718 [2020-08-22 06:01:12,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 06:01:12,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-08-22 06:01:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 592. [2020-08-22 06:01:12,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-22 06:01:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 811 transitions. [2020-08-22 06:01:12,581 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 811 transitions. Word has length 40 [2020-08-22 06:01:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:01:12,582 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 811 transitions. [2020-08-22 06:01:12,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 06:01:12,582 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 811 transitions. [2020-08-22 06:01:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 06:01:12,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:01:12,584 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 06:01:12,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:01:12,585 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:01:12,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:01:12,585 INFO L82 PathProgramCache]: Analyzing trace with hash -474975370, now seen corresponding path program 1 times [2020-08-22 06:01:12,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:01:12,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673372002] [2020-08-22 06:01:12,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:01:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,244 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 514 [2020-08-22 06:01:14,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:01:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 06:01:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 06:01:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:01:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 06:01:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:01:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:01:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 06:01:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:01:14,678 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 06:01:14,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673372002] [2020-08-22 06:01:14,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 06:01:14,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-22 06:01:14,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431603449] [2020-08-22 06:01:14,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 06:01:14,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:01:14,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 06:01:14,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-08-22 06:01:14,683 INFO L87 Difference]: Start difference. First operand 592 states and 811 transitions. Second operand 8 states. [2020-08-22 06:01:16,204 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 517