/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--wireless--hostap--hostap.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 12:56:58,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 12:56:58,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 12:56:58,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 12:56:58,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 12:56:58,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 12:56:58,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 12:56:58,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 12:56:58,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 12:56:58,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 12:56:58,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 12:56:58,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 12:56:58,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 12:56:58,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 12:56:58,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 12:56:58,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 12:56:58,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 12:56:58,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 12:56:58,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 12:56:58,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 12:56:58,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 12:56:58,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 12:56:58,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 12:56:58,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 12:56:58,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 12:56:58,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 12:56:58,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 12:56:58,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 12:56:58,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 12:56:58,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 12:56:58,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 12:56:58,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 12:56:58,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 12:56:58,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 12:56:58,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 12:56:58,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 12:56:58,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 12:56:58,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 12:56:58,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 12:56:58,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 12:56:58,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 12:56:58,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 12:56:58,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 12:56:58,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 12:56:58,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 12:56:58,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 12:56:58,723 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 12:56:58,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 12:56:58,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 12:56:58,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 12:56:58,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 12:56:58,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 12:56:58,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 12:56:58,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 12:56:58,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 12:56:58,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 12:56:58,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 12:56:58,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 12:56:58,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 12:56:58,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:56:58,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 12:56:58,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 12:56:58,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 12:56:58,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 12:56:58,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 12:56:58,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 12:56:58,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 12:56:58,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 12:56:59,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 12:56:59,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 12:56:59,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 12:56:59,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 12:56:59,157 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 12:56:59,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--wireless--hostap--hostap.ko-main.cil.out.i [2020-12-22 12:56:59,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e11ba9f/ef51b66dba3c46f59acf03cb316301b7/FLAG8d8de017c [2020-12-22 12:57:00,710 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 12:57:00,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--wireless--hostap--hostap.ko-main.cil.out.i [2020-12-22 12:57:00,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e11ba9f/ef51b66dba3c46f59acf03cb316301b7/FLAG8d8de017c [2020-12-22 12:57:01,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3e11ba9f/ef51b66dba3c46f59acf03cb316301b7 [2020-12-22 12:57:01,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 12:57:01,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 12:57:01,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 12:57:01,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 12:57:01,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 12:57:01,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:57:01" (1/1) ... [2020-12-22 12:57:01,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e77dd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:01, skipping insertion in model container [2020-12-22 12:57:01,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:57:01" (1/1) ... [2020-12-22 12:57:01,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 12:57:01,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 12:57:07,710 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--wireless--hostap--hostap.ko-main.cil.out.i[608636,608649] [2020-12-22 12:57:07,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:57:07,957 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 12:57:10,123 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--net--wireless--hostap--hostap.ko-main.cil.out.i[608636,608649] [2020-12-22 12:57:10,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:57:11,313 INFO L208 MainTranslator]: Completed translation [2020-12-22 12:57:11,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11 WrapperNode [2020-12-22 12:57:11,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 12:57:11,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 12:57:11,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 12:57:11,316 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 12:57:11,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:11,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:15,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 12:57:15,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 12:57:15,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 12:57:15,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 12:57:15,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:15,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:16,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:16,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:19,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:19,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:19,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... [2020-12-22 12:57:20,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 12:57:20,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 12:57:20,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 12:57:20,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 12:57:20,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-12-22 12:57:20,751 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2020-12-22 12:57:20,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 12:57:20,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 12:57:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 12:57:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 12:57:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure prism2_close [2020-12-22 12:57:20,752 INFO L138 BoogieDeclarations]: Found implementation of procedure prism2_close [2020-12-22 12:57:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 12:57:20,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 12:57:20,753 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 12:57:20,753 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 12:57:20,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 12:57:20,753 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 12:57:20,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 12:57:20,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 12:57:20,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 12:57:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 12:57:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 12:57:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 12:57:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 12:57:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 12:57:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure prism2_tx_timeout [2020-12-22 12:57:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure prism2_tx_timeout [2020-12-22 12:57:20,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 12:57:20,755 INFO L130 BoogieDeclarations]: Found specification of procedure prism2_open [2020-12-22 12:57:20,755 INFO L138 BoogieDeclarations]: Found implementation of procedure prism2_open [2020-12-22 12:57:20,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 12:57:20,755 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-12-22 13:00:26,813 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:00:26,817 INFO L299 CfgBuilder]: Removed 14636 assume(true) statements. [2020-12-22 13:00:26,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:00:26 BoogieIcfgContainer [2020-12-22 13:00:26,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:00:26,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:00:26,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:00:26,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:00:26,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:57:01" (1/3) ... [2020-12-22 13:00:26,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4f565e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:00:26, skipping insertion in model container [2020-12-22 13:00:26,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:11" (2/3) ... [2020-12-22 13:00:26,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4f565e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:00:26, skipping insertion in model container [2020-12-22 13:00:26,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:00:26" (3/3) ... [2020-12-22 13:00:26,845 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--net--wireless--hostap--hostap.ko-main.cil.out.i [2020-12-22 13:00:26,851 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:00:26,862 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 13:00:27,053 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 13:00:27,149 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:00:27,150 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:00:27,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:00:27,151 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:00:27,151 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:00:27,151 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:00:27,151 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:00:27,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:00:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 18769 states. [2020-12-22 13:00:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 13:00:27,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:27,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:00:27,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:27,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:27,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1625793821, now seen corresponding path program 1 times [2020-12-22 13:00:27,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:27,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367766743] [2020-12-22 13:00:27,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:00:28,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367766743] [2020-12-22 13:00:28,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:00:28,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:00:28,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125720906] [2020-12-22 13:00:28,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:00:28,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:28,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:00:28,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:00:28,811 INFO L87 Difference]: Start difference. First operand 18769 states. Second operand 3 states. [2020-12-22 13:00:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:32,970 INFO L93 Difference]: Finished difference Result 56274 states and 84047 transitions. [2020-12-22 13:00:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:00:32,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-22 13:00:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:33,232 INFO L225 Difference]: With dead ends: 56274 [2020-12-22 13:00:33,233 INFO L226 Difference]: Without dead ends: 37504 [2020-12-22 13:00:33,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:00:33,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37504 states. [2020-12-22 13:00:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37504 to 37504. [2020-12-22 13:00:34,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37504 states. [2020-12-22 13:00:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37504 states to 37504 states and 55249 transitions. [2020-12-22 13:00:35,210 INFO L78 Accepts]: Start accepts. Automaton has 37504 states and 55249 transitions. Word has length 18 [2020-12-22 13:00:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:35,211 INFO L481 AbstractCegarLoop]: Abstraction has 37504 states and 55249 transitions. [2020-12-22 13:00:35,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:00:35,211 INFO L276 IsEmpty]: Start isEmpty. Operand 37504 states and 55249 transitions. [2020-12-22 13:00:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 13:00:35,221 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:35,221 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] [2020-12-22 13:00:35,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:00:35,221 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:35,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1757525663, now seen corresponding path program 1 times [2020-12-22 13:00:35,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:35,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959105243] [2020-12-22 13:00:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:00:36,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959105243] [2020-12-22 13:00:36,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:00:36,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 13:00:36,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773830072] [2020-12-22 13:00:36,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 13:00:36,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:36,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 13:00:36,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 13:00:36,070 INFO L87 Difference]: Start difference. First operand 37504 states and 55249 transitions. Second operand 4 states. [2020-12-22 13:00:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:39,334 INFO L93 Difference]: Finished difference Result 75004 states and 110493 transitions. [2020-12-22 13:00:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:00:39,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-22 13:00:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:39,470 INFO L225 Difference]: With dead ends: 75004 [2020-12-22 13:00:39,471 INFO L226 Difference]: Without dead ends: 37503 [2020-12-22 13:00:39,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 13:00:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37503 states. [2020-12-22 13:00:40,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37503 to 37503. [2020-12-22 13:00:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37503 states. [2020-12-22 13:00:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37503 states to 37503 states and 55245 transitions. [2020-12-22 13:00:40,977 INFO L78 Accepts]: Start accepts. Automaton has 37503 states and 55245 transitions. Word has length 22 [2020-12-22 13:00:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:40,978 INFO L481 AbstractCegarLoop]: Abstraction has 37503 states and 55245 transitions. [2020-12-22 13:00:40,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 13:00:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 37503 states and 55245 transitions. [2020-12-22 13:00:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 13:00:40,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:40,995 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:00:40,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:00:40,996 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:40,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:40,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1662940763, now seen corresponding path program 1 times [2020-12-22 13:00:41,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:41,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101734876] [2020-12-22 13:00:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 13:00:42,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101734876] [2020-12-22 13:00:42,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:00:42,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:00:42,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516868846] [2020-12-22 13:00:42,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:00:42,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:42,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:00:42,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:00:42,110 INFO L87 Difference]: Start difference. First operand 37503 states and 55245 transitions. Second operand 3 states. [2020-12-22 13:00:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:45,301 INFO L93 Difference]: Finished difference Result 37503 states and 55245 transitions. [2020-12-22 13:00:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:00:45,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-22 13:00:45,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:45,497 INFO L225 Difference]: With dead ends: 37503 [2020-12-22 13:00:45,497 INFO L226 Difference]: Without dead ends: 37501 [2020-12-22 13:00:45,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:00:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37501 states. [2020-12-22 13:00:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37501 to 37501. [2020-12-22 13:00:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37501 states. [2020-12-22 13:00:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37501 states to 37501 states and 55243 transitions. [2020-12-22 13:00:47,050 INFO L78 Accepts]: Start accepts. Automaton has 37501 states and 55243 transitions. Word has length 35 [2020-12-22 13:00:47,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:47,052 INFO L481 AbstractCegarLoop]: Abstraction has 37501 states and 55243 transitions. [2020-12-22 13:00:47,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:00:47,052 INFO L276 IsEmpty]: Start isEmpty. Operand 37501 states and 55243 transitions. [2020-12-22 13:00:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 13:00:47,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:47,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:00:47,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 13:00:47,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:47,079 INFO L82 PathProgramCache]: Analyzing trace with hash 11623057, now seen corresponding path program 1 times [2020-12-22 13:00:47,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:47,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095751523] [2020-12-22 13:00:47,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY